diff --git a/Data Structures/C-Strings/..git/HEAD b/Data Structures/C-Strings/..git/HEAD
deleted file mode 100644
index b870d82..0000000
--- a/Data Structures/C-Strings/..git/HEAD	
+++ /dev/null
@@ -1 +0,0 @@
-ref: refs/heads/main
diff --git a/Data Structures/C-Strings/..git/config b/Data Structures/C-Strings/..git/config
deleted file mode 100644
index b0c0131..0000000
--- a/Data Structures/C-Strings/..git/config	
+++ /dev/null
@@ -1,11 +0,0 @@
-[core]
-	repositoryformatversion = 0
-	filemode = true
-	bare = false
-	logallrefupdates = true
-[remote "origin"]
-	url = git@github.com:42learners/C-strings-26ee5461-ef53-4c8f-977d-750f6fc9e4f0.git
-	fetch = +refs/heads/*:refs/remotes/origin/*
-[branch "main"]
-	remote = origin
-	merge = refs/heads/main
diff --git a/Data Structures/C-Strings/..git/description b/Data Structures/C-Strings/..git/description
deleted file mode 100644
index 498b267..0000000
--- a/Data Structures/C-Strings/..git/description	
+++ /dev/null
@@ -1 +0,0 @@
-Unnamed repository; edit this file 'description' to name the repository.
diff --git a/Data Structures/C-Strings/..git/hooks/applypatch-msg.sample b/Data Structures/C-Strings/..git/hooks/applypatch-msg.sample
deleted file mode 100755
index 09b38a8..0000000
--- a/Data Structures/C-Strings/..git/hooks/applypatch-msg.sample	
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to check the commit log message taken by
-# applypatch from an e-mail message.
-#
-# The hook should exit with non-zero status after issuing an
-# appropriate message if it wants to stop the commit.  The hook is
-# allowed to edit the commit message file.
-#
-# To enable this hook, rename this file to "applypatch-msg".
-
-. git-sh-setup
-commitmsg="$(git rev-parse --git-path hooks/commit-msg)"
-test -x "$commitmsg" && exec "$commitmsg" ${1+"$@"}
-:
diff --git a/Data Structures/C-Strings/..git/hooks/commit-msg.sample b/Data Structures/C-Strings/..git/hooks/commit-msg.sample
deleted file mode 100755
index 3ced146..0000000
--- a/Data Structures/C-Strings/..git/hooks/commit-msg.sample	
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to check the commit log message.
-# Called by "git commit" with one argument, the name of the file
-# that has the commit message.  The hook should exit with non-zero
-# status after issuing an appropriate message if it wants to stop the
-# commit.  The hook is allowed to edit the commit message file.
-#
-# To enable this hook, rename this file to "commit-msg".
-
-# Uncomment the below to add a Signed-off-by line to the message.
-# Doing this in a hook is a bad idea in general, but the prepare-commit-msg
-# hook is more suited to it.
-#
-# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
-# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
-
-# This example catches duplicate Signed-off-by lines.
-
-test "" = "$(grep '^Signed-off-by: ' "$1" |
-	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {
-	echo >&2 Duplicate Signed-off-by lines.
-	exit 1
-}
diff --git a/Data Structures/C-Strings/..git/hooks/fsmonitor-watchman.sample b/Data Structures/C-Strings/..git/hooks/fsmonitor-watchman.sample
deleted file mode 100755
index 23e856f..0000000
--- a/Data Structures/C-Strings/..git/hooks/fsmonitor-watchman.sample	
+++ /dev/null
@@ -1,174 +0,0 @@
-#!/usr/bin/perl
-
-use strict;
-use warnings;
-use IPC::Open2;
-
-# An example hook script to integrate Watchman
-# (https://facebook.github.io/watchman/) with git to speed up detecting
-# new and modified files.
-#
-# The hook is passed a version (currently 2) and last update token
-# formatted as a string and outputs to stdout a new update token and
-# all files that have been modified since the update token. Paths must
-# be relative to the root of the working tree and separated by a single NUL.
-#
-# To enable this hook, rename this file to "query-watchman" and set
-# 'git config core.fsmonitor .git/hooks/query-watchman'
-#
-my ($version, $last_update_token) = @ARGV;
-
-# Uncomment for debugging
-# print STDERR "$0 $version $last_update_token\n";
-
-# Check the hook interface version
-if ($version ne 2) {
-	die "Unsupported query-fsmonitor hook version '$version'.\n" .
-	    "Falling back to scanning...\n";
-}
-
-my $git_work_tree = get_working_dir();
-
-my $retry = 1;
-
-my $json_pkg;
-eval {
-	require JSON::XS;
-	$json_pkg = "JSON::XS";
-	1;
-} or do {
-	require JSON::PP;
-	$json_pkg = "JSON::PP";
-};
-
-launch_watchman();
-
-sub launch_watchman {
-	my $o = watchman_query();
-	if (is_work_tree_watched($o)) {
-		output_result($o->{clock}, @{$o->{files}});
-	}
-}
-
-sub output_result {
-	my ($clockid, @files) = @_;
-
-	# Uncomment for debugging watchman output
-	# open (my $fh, ">", ".git/watchman-output.out");
-	# binmode $fh, ":utf8";
-	# print $fh "$clockid\n@files\n";
-	# close $fh;
-
-	binmode STDOUT, ":utf8";
-	print $clockid;
-	print "\0";
-	local $, = "\0";
-	print @files;
-}
-
-sub watchman_clock {
-	my $response = qx/watchman clock "$git_work_tree"/;
-	die "Failed to get clock id on '$git_work_tree'.\n" .
-		"Falling back to scanning...\n" if $? != 0;
-
-	return $json_pkg->new->utf8->decode($response);
-}
-
-sub watchman_query {
-	my $pid = open2(\*CHLD_OUT, \*CHLD_IN, 'watchman -j --no-pretty')
-	or die "open2() failed: $!\n" .
-	"Falling back to scanning...\n";
-
-	# In the query expression below we're asking for names of files that
-	# changed since $last_update_token but not from the .git folder.
-	#
-	# To accomplish this, we're using the "since" generator to use the
-	# recency index to select candidate nodes and "fields" to limit the
-	# output to file names only. Then we're using the "expression" term to
-	# further constrain the results.
-	my $last_update_line = "";
-	if (substr($last_update_token, 0, 1) eq "c") {
-		$last_update_token = "\"$last_update_token\"";
-		$last_update_line = qq[\n"since": $last_update_token,];
-	}
-	my $query = <<"	END";
-		["query", "$git_work_tree", {$last_update_line
-			"fields": ["name"],
-			"expression": ["not", ["dirname", ".git"]]
-		}]
-	END
-
-	# Uncomment for debugging the watchman query
-	# open (my $fh, ">", ".git/watchman-query.json");
-	# print $fh $query;
-	# close $fh;
-
-	print CHLD_IN $query;
-	close CHLD_IN;
-	my $response = do {local $/; <CHLD_OUT>};
-
-	# Uncomment for debugging the watch response
-	# open ($fh, ">", ".git/watchman-response.json");
-	# print $fh $response;
-	# close $fh;
-
-	die "Watchman: command returned no output.\n" .
-	"Falling back to scanning...\n" if $response eq "";
-	die "Watchman: command returned invalid output: $response\n" .
-	"Falling back to scanning...\n" unless $response =~ /^\{/;
-
-	return $json_pkg->new->utf8->decode($response);
-}
-
-sub is_work_tree_watched {
-	my ($output) = @_;
-	my $error = $output->{error};
-	if ($retry > 0 and $error and $error =~ m/unable to resolve root .* directory (.*) is not watched/) {
-		$retry--;
-		my $response = qx/watchman watch "$git_work_tree"/;
-		die "Failed to make watchman watch '$git_work_tree'.\n" .
-		    "Falling back to scanning...\n" if $? != 0;
-		$output = $json_pkg->new->utf8->decode($response);
-		$error = $output->{error};
-		die "Watchman: $error.\n" .
-		"Falling back to scanning...\n" if $error;
-
-		# Uncomment for debugging watchman output
-		# open (my $fh, ">", ".git/watchman-output.out");
-		# close $fh;
-
-		# Watchman will always return all files on the first query so
-		# return the fast "everything is dirty" flag to git and do the
-		# Watchman query just to get it over with now so we won't pay
-		# the cost in git to look up each individual file.
-		my $o = watchman_clock();
-		$error = $output->{error};
-
-		die "Watchman: $error.\n" .
-		"Falling back to scanning...\n" if $error;
-
-		output_result($o->{clock}, ("/"));
-		$last_update_token = $o->{clock};
-
-		eval { launch_watchman() };
-		return 0;
-	}
-
-	die "Watchman: $error.\n" .
-	"Falling back to scanning...\n" if $error;
-
-	return 1;
-}
-
-sub get_working_dir {
-	my $working_dir;
-	if ($^O =~ 'msys' || $^O =~ 'cygwin') {
-		$working_dir = Win32::GetCwd();
-		$working_dir =~ tr/\\/\//;
-	} else {
-		require Cwd;
-		$working_dir = Cwd::cwd();
-	}
-
-	return $working_dir;
-}
diff --git a/Data Structures/C-Strings/..git/hooks/post-update.sample b/Data Structures/C-Strings/..git/hooks/post-update.sample
deleted file mode 100755
index ee496e3..0000000
--- a/Data Structures/C-Strings/..git/hooks/post-update.sample	
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to prepare a packed repository for use over
-# dumb transports.
-#
-# To enable this hook, rename this file to "post-update".
-
-exec git update-server-info
diff --git a/Data Structures/C-Strings/..git/hooks/pre-applypatch.sample b/Data Structures/C-Strings/..git/hooks/pre-applypatch.sample
deleted file mode 100755
index 845130a..0000000
--- a/Data Structures/C-Strings/..git/hooks/pre-applypatch.sample	
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to verify what is about to be committed
-# by applypatch from an e-mail message.
-#
-# The hook should exit with non-zero status after issuing an
-# appropriate message if it wants to stop the commit.
-#
-# To enable this hook, rename this file to "pre-applypatch".
-
-. git-sh-setup
-precommit="$(git rev-parse --git-path hooks/pre-commit)"
-test -x "$precommit" && exec "$precommit" ${1+"$@"}
-:
diff --git a/Data Structures/C-Strings/..git/hooks/pre-commit.sample b/Data Structures/C-Strings/..git/hooks/pre-commit.sample
deleted file mode 100755
index 44f7de3..0000000
--- a/Data Structures/C-Strings/..git/hooks/pre-commit.sample	
+++ /dev/null
@@ -1,49 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to verify what is about to be committed.
-# Called by "git commit" with no arguments.  The hook should
-# exit with non-zero status after issuing an appropriate message if
-# it wants to stop the commit.
-#
-# To enable this hook, rename this file to "pre-commit".
-
-if git rev-parse --verify HEAD >/dev/null 2>&1
-then
-	against=HEAD
-else
-	# Initial commit: diff against an empty tree object
-	against=$(git hash-object -t tree /dev/null)
-fi
-
-# If you want to allow non-ASCII filenames set this variable to true.
-allownonascii=$(git config --type=bool hooks.allownonascii)
-
-# Redirect output to stderr.
-exec 1>&2
-
-# Cross platform projects tend to avoid non-ASCII filenames; prevent
-# them from being added to the repository. We exploit the fact that the
-# printable range starts at the space character and ends with tilde.
-if [ "$allownonascii" != "true" ] &&
-	# Note that the use of brackets around a tr range is ok here, (it's
-	# even required, for portability to Solaris 10's /usr/bin/tr), since
-	# the square bracket bytes happen to fall in the designated range.
-	test $(git diff-index --cached --name-only --diff-filter=A -z $against |
-	  LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0
-then
-	cat <<\EOF
-Error: Attempt to add a non-ASCII file name.
-
-This can cause problems if you want to work with people on other platforms.
-
-To be portable it is advisable to rename the file.
-
-If you know what you are doing you can disable this check using:
-
-  git config hooks.allownonascii true
-EOF
-	exit 1
-fi
-
-# If there are whitespace errors, print the offending file names and fail.
-exec git diff-index --check --cached $against --
diff --git a/Data Structures/C-Strings/..git/hooks/pre-merge-commit.sample b/Data Structures/C-Strings/..git/hooks/pre-merge-commit.sample
deleted file mode 100755
index 09b65a5..0000000
--- a/Data Structures/C-Strings/..git/hooks/pre-merge-commit.sample	
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to verify what is about to be committed.
-# Called by "git merge" with no arguments.  The hook should
-# exit with non-zero status after issuing an appropriate message to
-# stderr if it wants to stop the merge commit.
-#
-# To enable this hook, rename this file to "pre-merge-commit".
-
-. git-sh-setup
-test -x "$GIT_DIR/hooks/pre-commit" &&
-        exec "$GIT_DIR/hooks/pre-commit"
-:
diff --git a/Data Structures/C-Strings/..git/hooks/pre-push.sample b/Data Structures/C-Strings/..git/hooks/pre-push.sample
deleted file mode 100755
index d5e513d..0000000
--- a/Data Structures/C-Strings/..git/hooks/pre-push.sample	
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/usr/bin/sh
-
-# An example hook script to verify what is about to be pushed.  Called by "git
-# push" after it has checked the remote status, but before anything has been
-# pushed.  If this script exits with a non-zero status nothing will be pushed.
-#
-# This hook is called with the following parameters:
-#
-# $1 -- Name of the remote to which the push is being done
-# $2 -- URL to which the push is being done
-#
-# If pushing without using a named remote those arguments will be equal.
-#
-# Information about the commits which are being pushed is supplied as lines to
-# the standard input in the form:
-#
-#   <local ref> <local oid> <remote ref> <remote oid>
-#
-# This sample shows how to prevent push of commits where the log message starts
-# with "WIP" (work in progress).
-
-remote="$1"
-url="$2"
-
-zero=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')
-
-while read local_ref local_oid remote_ref remote_oid
-do
-	if test "$local_oid" = "$zero"
-	then
-		# Handle delete
-		:
-	else
-		if test "$remote_oid" = "$zero"
-		then
-			# New branch, examine all commits
-			range="$local_oid"
-		else
-			# Update to existing branch, examine new commits
-			range="$remote_oid..$local_oid"
-		fi
-
-		# Check for WIP commit
-		commit=$(git rev-list -n 1 --grep '^WIP' "$range")
-		if test -n "$commit"
-		then
-			echo >&2 "Found WIP commit in $local_ref, not pushing"
-			exit 1
-		fi
-	fi
-done
-
-exit 0
diff --git a/Data Structures/C-Strings/..git/hooks/pre-rebase.sample b/Data Structures/C-Strings/..git/hooks/pre-rebase.sample
deleted file mode 100755
index 36efc64..0000000
--- a/Data Structures/C-Strings/..git/hooks/pre-rebase.sample	
+++ /dev/null
@@ -1,169 +0,0 @@
-#!/usr/bin/sh
-#
-# Copyright (c) 2006, 2008 Junio C Hamano
-#
-# The "pre-rebase" hook is run just before "git rebase" starts doing
-# its job, and can prevent the command from running by exiting with
-# non-zero status.
-#
-# The hook is called with the following parameters:
-#
-# $1 -- the upstream the series was forked from.
-# $2 -- the branch being rebased (or empty when rebasing the current branch).
-#
-# This sample shows how to prevent topic branches that are already
-# merged to 'next' branch from getting rebased, because allowing it
-# would result in rebasing already published history.
-
-publish=next
-basebranch="$1"
-if test "$#" = 2
-then
-	topic="refs/heads/$2"
-else
-	topic=`git symbolic-ref HEAD` ||
-	exit 0 ;# we do not interrupt rebasing detached HEAD
-fi
-
-case "$topic" in
-refs/heads/??/*)
-	;;
-*)
-	exit 0 ;# we do not interrupt others.
-	;;
-esac
-
-# Now we are dealing with a topic branch being rebased
-# on top of master.  Is it OK to rebase it?
-
-# Does the topic really exist?
-git show-ref -q "$topic" || {
-	echo >&2 "No such branch $topic"
-	exit 1
-}
-
-# Is topic fully merged to master?
-not_in_master=`git rev-list --pretty=oneline ^master "$topic"`
-if test -z "$not_in_master"
-then
-	echo >&2 "$topic is fully merged to master; better remove it."
-	exit 1 ;# we could allow it, but there is no point.
-fi
-
-# Is topic ever merged to next?  If so you should not be rebasing it.
-only_next_1=`git rev-list ^master "^$topic" ${publish} | sort`
-only_next_2=`git rev-list ^master           ${publish} | sort`
-if test "$only_next_1" = "$only_next_2"
-then
-	not_in_topic=`git rev-list "^$topic" master`
-	if test -z "$not_in_topic"
-	then
-		echo >&2 "$topic is already up to date with master"
-		exit 1 ;# we could allow it, but there is no point.
-	else
-		exit 0
-	fi
-else
-	not_in_next=`git rev-list --pretty=oneline ^${publish} "$topic"`
-	/usr/bin/perl -e '
-		my $topic = $ARGV[0];
-		my $msg = "* $topic has commits already merged to public branch:\n";
-		my (%not_in_next) = map {
-			/^([0-9a-f]+) /;
-			($1 => 1);
-		} split(/\n/, $ARGV[1]);
-		for my $elem (map {
-				/^([0-9a-f]+) (.*)$/;
-				[$1 => $2];
-			} split(/\n/, $ARGV[2])) {
-			if (!exists $not_in_next{$elem->[0]}) {
-				if ($msg) {
-					print STDERR $msg;
-					undef $msg;
-				}
-				print STDERR " $elem->[1]\n";
-			}
-		}
-	' "$topic" "$not_in_next" "$not_in_master"
-	exit 1
-fi
-
-<<\DOC_END
-
-This sample hook safeguards topic branches that have been
-published from being rewound.
-
-The workflow assumed here is:
-
- * Once a topic branch forks from "master", "master" is never
-   merged into it again (either directly or indirectly).
-
- * Once a topic branch is fully cooked and merged into "master",
-   it is deleted.  If you need to build on top of it to correct
-   earlier mistakes, a new topic branch is created by forking at
-   the tip of the "master".  This is not strictly necessary, but
-   it makes it easier to keep your history simple.
-
- * Whenever you need to test or publish your changes to topic
-   branches, merge them into "next" branch.
-
-The script, being an example, hardcodes the publish branch name
-to be "next", but it is trivial to make it configurable via
-$GIT_DIR/config mechanism.
-
-With this workflow, you would want to know:
-
-(1) ... if a topic branch has ever been merged to "next".  Young
-    topic branches can have stupid mistakes you would rather
-    clean up before publishing, and things that have not been
-    merged into other branches can be easily rebased without
-    affecting other people.  But once it is published, you would
-    not want to rewind it.
-
-(2) ... if a topic branch has been fully merged to "master".
-    Then you can delete it.  More importantly, you should not
-    build on top of it -- other people may already want to
-    change things related to the topic as patches against your
-    "master", so if you need further changes, it is better to
-    fork the topic (perhaps with the same name) afresh from the
-    tip of "master".
-
-Let's look at this example:
-
-		   o---o---o---o---o---o---o---o---o---o "next"
-		  /       /           /           /
-		 /   a---a---b A     /           /
-		/   /               /           /
-	       /   /   c---c---c---c B         /
-	      /   /   /             \         /
-	     /   /   /   b---b C     \       /
-	    /   /   /   /             \     /
-    ---o---o---o---o---o---o---o---o---o---o---o "master"
-
-
-A, B and C are topic branches.
-
- * A has one fix since it was merged up to "next".
-
- * B has finished.  It has been fully merged up to "master" and "next",
-   and is ready to be deleted.
-
- * C has not merged to "next" at all.
-
-We would want to allow C to be rebased, refuse A, and encourage
-B to be deleted.
-
-To compute (1):
-
-	git rev-list ^master ^topic next
-	git rev-list ^master        next
-
-	if these match, topic has not merged in next at all.
-
-To compute (2):
-
-	git rev-list master..topic
-
-	if this is empty, it is fully merged to "master".
-
-DOC_END
diff --git a/Data Structures/C-Strings/..git/hooks/pre-receive.sample b/Data Structures/C-Strings/..git/hooks/pre-receive.sample
deleted file mode 100755
index 6f473c3..0000000
--- a/Data Structures/C-Strings/..git/hooks/pre-receive.sample	
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to make use of push options.
-# The example simply echoes all push options that start with 'echoback='
-# and rejects all pushes when the "reject" push option is used.
-#
-# To enable this hook, rename this file to "pre-receive".
-
-if test -n "$GIT_PUSH_OPTION_COUNT"
-then
-	i=0
-	while test "$i" -lt "$GIT_PUSH_OPTION_COUNT"
-	do
-		eval "value=\$GIT_PUSH_OPTION_$i"
-		case "$value" in
-		echoback=*)
-			echo "echo from the pre-receive-hook: ${value#*=}" >&2
-			;;
-		reject)
-			exit 1
-		esac
-		i=$((i + 1))
-	done
-fi
diff --git a/Data Structures/C-Strings/..git/hooks/prepare-commit-msg.sample b/Data Structures/C-Strings/..git/hooks/prepare-commit-msg.sample
deleted file mode 100755
index cd8e794..0000000
--- a/Data Structures/C-Strings/..git/hooks/prepare-commit-msg.sample	
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to prepare the commit log message.
-# Called by "git commit" with the name of the file that has the
-# commit message, followed by the description of the commit
-# message's source.  The hook's purpose is to edit the commit
-# message file.  If the hook fails with a non-zero status,
-# the commit is aborted.
-#
-# To enable this hook, rename this file to "prepare-commit-msg".
-
-# This hook includes three examples. The first one removes the
-# "# Please enter the commit message..." help message.
-#
-# The second includes the output of "git diff --name-status -r"
-# into the message, just before the "git status" output.  It is
-# commented because it doesn't cope with --amend or with squashed
-# commits.
-#
-# The third example adds a Signed-off-by line to the message, that can
-# still be edited.  This is rarely a good idea.
-
-COMMIT_MSG_FILE=$1
-COMMIT_SOURCE=$2
-SHA1=$3
-
-/usr/bin/perl -i.bak -ne 'print unless(m/^. Please enter the commit message/..m/^#$/)' "$COMMIT_MSG_FILE"
-
-# case "$COMMIT_SOURCE,$SHA1" in
-#  ,|template,)
-#    /usr/bin/perl -i.bak -pe '
-#       print "\n" . `git diff --cached --name-status -r`
-# 	 if /^#/ && $first++ == 0' "$COMMIT_MSG_FILE" ;;
-#  *) ;;
-# esac
-
-# SOB=$(git var GIT_COMMITTER_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
-# git interpret-trailers --in-place --trailer "$SOB" "$COMMIT_MSG_FILE"
-# if test -z "$COMMIT_SOURCE"
-# then
-#   /usr/bin/perl -i.bak -pe 'print "\n" if !$first_line++' "$COMMIT_MSG_FILE"
-# fi
diff --git a/Data Structures/C-Strings/..git/hooks/push-to-checkout.sample b/Data Structures/C-Strings/..git/hooks/push-to-checkout.sample
deleted file mode 100755
index badb4b4..0000000
--- a/Data Structures/C-Strings/..git/hooks/push-to-checkout.sample	
+++ /dev/null
@@ -1,78 +0,0 @@
-#!/usr/bin/sh
-
-# An example hook script to update a checked-out tree on a git push.
-#
-# This hook is invoked by git-receive-pack(1) when it reacts to git
-# push and updates reference(s) in its repository, and when the push
-# tries to update the branch that is currently checked out and the
-# receive.denyCurrentBranch configuration variable is set to
-# updateInstead.
-#
-# By default, such a push is refused if the working tree and the index
-# of the remote repository has any difference from the currently
-# checked out commit; when both the working tree and the index match
-# the current commit, they are updated to match the newly pushed tip
-# of the branch. This hook is to be used to override the default
-# behaviour; however the code below reimplements the default behaviour
-# as a starting point for convenient modification.
-#
-# The hook receives the commit with which the tip of the current
-# branch is going to be updated:
-commit=$1
-
-# It can exit with a non-zero status to refuse the push (when it does
-# so, it must not modify the index or the working tree).
-die () {
-	echo >&2 "$*"
-	exit 1
-}
-
-# Or it can make any necessary changes to the working tree and to the
-# index to bring them to the desired state when the tip of the current
-# branch is updated to the new commit, and exit with a zero status.
-#
-# For example, the hook can simply run git read-tree -u -m HEAD "$1"
-# in order to emulate git fetch that is run in the reverse direction
-# with git push, as the two-tree form of git read-tree -u -m is
-# essentially the same as git switch or git checkout that switches
-# branches while keeping the local changes in the working tree that do
-# not interfere with the difference between the branches.
-
-# The below is a more-or-less exact translation to shell of the C code
-# for the default behaviour for git's push-to-checkout hook defined in
-# the push_to_deploy() function in builtin/receive-pack.c.
-#
-# Note that the hook will be executed from the repository directory,
-# not from the working tree, so if you want to perform operations on
-# the working tree, you will have to adapt your code accordingly, e.g.
-# by adding "cd .." or using relative paths.
-
-if ! git update-index -q --ignore-submodules --refresh
-then
-	die "Up-to-date check failed"
-fi
-
-if ! git diff-files --quiet --ignore-submodules --
-then
-	die "Working directory has unstaged changes"
-fi
-
-# This is a rough translation of:
-#
-#   head_has_history() ? "HEAD" : EMPTY_TREE_SHA1_HEX
-if git cat-file -e HEAD 2>/dev/null
-then
-	head=HEAD
-else
-	head=$(git hash-object -t tree --stdin </dev/null)
-fi
-
-if ! git diff-index --quiet --cached --ignore-submodules $head --
-then
-	die "Working directory has staged changes"
-fi
-
-if ! git read-tree -u -m "$commit"
-then
-	die "Could not update working tree to new HEAD"
-fi
diff --git a/Data Structures/C-Strings/..git/hooks/sendemail-validate.sample b/Data Structures/C-Strings/..git/hooks/sendemail-validate.sample
deleted file mode 100755
index 7af8e31..0000000
--- a/Data Structures/C-Strings/..git/hooks/sendemail-validate.sample	
+++ /dev/null
@@ -1,77 +0,0 @@
-#!/usr/bin/sh
-
-# An example hook script to validate a patch (and/or patch series) before
-# sending it via email.
-#
-# The hook should exit with non-zero status after issuing an appropriate
-# message if it wants to prevent the email(s) from being sent.
-#
-# To enable this hook, rename this file to "sendemail-validate".
-#
-# By default, it will only check that the patch(es) can be applied on top of
-# the default upstream branch without conflicts in a secondary worktree. After
-# validation (successful or not) of the last patch of a series, the worktree
-# will be deleted.
-#
-# The following config variables can be set to change the default remote and
-# remote ref that are used to apply the patches against:
-#
-#   sendemail.validateRemote (default: origin)
-#   sendemail.validateRemoteRef (default: HEAD)
-#
-# Replace the TODO placeholders with appropriate checks according to your
-# needs.
-
-validate_cover_letter () {
-	file="$1"
-	# TODO: Replace with appropriate checks (e.g. spell checking).
-	true
-}
-
-validate_patch () {
-	file="$1"
-	# Ensure that the patch applies without conflicts.
-	git am -3 "$file" || return
-	# TODO: Replace with appropriate checks for this patch
-	# (e.g. checkpatch.pl).
-	true
-}
-
-validate_series () {
-	# TODO: Replace with appropriate checks for the whole series
-	# (e.g. quick build, coding style checks, etc.).
-	true
-}
-
-# main -------------------------------------------------------------------------
-
-if test "$GIT_SENDEMAIL_FILE_COUNTER" = 1
-then
-	remote=$(git config --default origin --get sendemail.validateRemote) &&
-	ref=$(git config --default HEAD --get sendemail.validateRemoteRef) &&
-	worktree=$(mktemp --tmpdir -d sendemail-validate.XXXXXXX) &&
-	git worktree add -fd --checkout "$worktree" "refs/remotes/$remote/$ref" &&
-	git config --replace-all sendemail.validateWorktree "$worktree"
-else
-	worktree=$(git config --get sendemail.validateWorktree)
-fi || {
-	echo "sendemail-validate: error: failed to prepare worktree" >&2
-	exit 1
-}
-
-unset GIT_DIR GIT_WORK_TREE
-cd "$worktree" &&
-
-if grep -q "^diff --git " "$1"
-then
-	validate_patch "$1"
-else
-	validate_cover_letter "$1"
-fi &&
-
-if test "$GIT_SENDEMAIL_FILE_COUNTER" = "$GIT_SENDEMAIL_FILE_TOTAL"
-then
-	git config --unset-all sendemail.validateWorktree &&
-	trap 'git worktree remove -ff "$worktree"' EXIT &&
-	validate_series
-fi
diff --git a/Data Structures/C-Strings/..git/hooks/update.sample b/Data Structures/C-Strings/..git/hooks/update.sample
deleted file mode 100755
index 5503c12..0000000
--- a/Data Structures/C-Strings/..git/hooks/update.sample	
+++ /dev/null
@@ -1,128 +0,0 @@
-#!/usr/bin/sh
-#
-# An example hook script to block unannotated tags from entering.
-# Called by "git receive-pack" with arguments: refname sha1-old sha1-new
-#
-# To enable this hook, rename this file to "update".
-#
-# Config
-# ------
-# hooks.allowunannotated
-#   This boolean sets whether unannotated tags will be allowed into the
-#   repository.  By default they won't be.
-# hooks.allowdeletetag
-#   This boolean sets whether deleting tags will be allowed in the
-#   repository.  By default they won't be.
-# hooks.allowmodifytag
-#   This boolean sets whether a tag may be modified after creation. By default
-#   it won't be.
-# hooks.allowdeletebranch
-#   This boolean sets whether deleting branches will be allowed in the
-#   repository.  By default they won't be.
-# hooks.denycreatebranch
-#   This boolean sets whether remotely creating branches will be denied
-#   in the repository.  By default this is allowed.
-#
-
-# --- Command line
-refname="$1"
-oldrev="$2"
-newrev="$3"
-
-# --- Safety check
-if [ -z "$GIT_DIR" ]; then
-	echo "Don't run this script from the command line." >&2
-	echo " (if you want, you could supply GIT_DIR then run" >&2
-	echo "  $0 <ref> <oldrev> <newrev>)" >&2
-	exit 1
-fi
-
-if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
-	echo "usage: $0 <ref> <oldrev> <newrev>" >&2
-	exit 1
-fi
-
-# --- Config
-allowunannotated=$(git config --type=bool hooks.allowunannotated)
-allowdeletebranch=$(git config --type=bool hooks.allowdeletebranch)
-denycreatebranch=$(git config --type=bool hooks.denycreatebranch)
-allowdeletetag=$(git config --type=bool hooks.allowdeletetag)
-allowmodifytag=$(git config --type=bool hooks.allowmodifytag)
-
-# check for no description
-projectdesc=$(sed -e '1q' "$GIT_DIR/description")
-case "$projectdesc" in
-"Unnamed repository"* | "")
-	echo "*** Project description file hasn't been set" >&2
-	exit 1
-	;;
-esac
-
-# --- Check types
-# if $newrev is 0000...0000, it's a commit to delete a ref.
-zero=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')
-if [ "$newrev" = "$zero" ]; then
-	newrev_type=delete
-else
-	newrev_type=$(git cat-file -t $newrev)
-fi
-
-case "$refname","$newrev_type" in
-	refs/tags/*,commit)
-		# un-annotated tag
-		short_refname=${refname##refs/tags/}
-		if [ "$allowunannotated" != "true" ]; then
-			echo "*** The un-annotated tag, $short_refname, is not allowed in this repository" >&2
-			echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate." >&2
-			exit 1
-		fi
-		;;
-	refs/tags/*,delete)
-		# delete tag
-		if [ "$allowdeletetag" != "true" ]; then
-			echo "*** Deleting a tag is not allowed in this repository" >&2
-			exit 1
-		fi
-		;;
-	refs/tags/*,tag)
-		# annotated tag
-		if [ "$allowmodifytag" != "true" ] && git rev-parse $refname > /dev/null 2>&1
-		then
-			echo "*** Tag '$refname' already exists." >&2
-			echo "*** Modifying a tag is not allowed in this repository." >&2
-			exit 1
-		fi
-		;;
-	refs/heads/*,commit)
-		# branch
-		if [ "$oldrev" = "$zero" -a "$denycreatebranch" = "true" ]; then
-			echo "*** Creating a branch is not allowed in this repository" >&2
-			exit 1
-		fi
-		;;
-	refs/heads/*,delete)
-		# delete branch
-		if [ "$allowdeletebranch" != "true" ]; then
-			echo "*** Deleting a branch is not allowed in this repository" >&2
-			exit 1
-		fi
-		;;
-	refs/remotes/*,commit)
-		# tracking branch
-		;;
-	refs/remotes/*,delete)
-		# delete tracking branch
-		if [ "$allowdeletebranch" != "true" ]; then
-			echo "*** Deleting a tracking branch is not allowed in this repository" >&2
-			exit 1
-		fi
-		;;
-	*)
-		# Anything else (is there anything else?)
-		echo "*** Update hook: unknown type of update to ref $refname of type $newrev_type" >&2
-		exit 1
-		;;
-esac
-
-# --- Finished
-exit 0
diff --git a/Data Structures/C-Strings/..git/info/exclude b/Data Structures/C-Strings/..git/info/exclude
deleted file mode 100644
index a5196d1..0000000
--- a/Data Structures/C-Strings/..git/info/exclude	
+++ /dev/null
@@ -1,6 +0,0 @@
-# git ls-files --others --exclude-from=.git/info/exclude
-# Lines that start with '#' are comments.
-# For a project mostly in C, the following would be a good set of
-# exclude patterns (uncomment them if you want to use them):
-# *.[oa]
-# *~
diff --git a/Data Structures/C-Strings/ex0/ft_strcpy.c b/Data Structures/C-Strings/ex0/ft_strcpy.c
index e69de29..e3904b9 100644
--- a/Data Structures/C-Strings/ex0/ft_strcpy.c	
+++ b/Data Structures/C-Strings/ex0/ft_strcpy.c	
@@ -0,0 +1,43 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strcpy.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 12:24:04 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 18:38:10 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+char	*ft_strcpy(char *dest, char *src)
+{
+	int	i;
+
+	i = 0;
+	while (src[i] != '\0')
+	{
+		dest[i] = src[i];
+		i++;
+	}
+	dest[i] = '\0';
+	return (dest);
+}
+/*
+int	main(void)
+{
+	char 	src[] = "Salut, je suis Lumi :3";
+	char	dst[20];
+	int		i = 0;
+
+	ft_strcpy(dst, src);
+	while (dst[i])
+	{
+		write(1, &dst[i], 1);
+		i++;
+	}
+	write(1, "\n", 1);
+	return (0);
+}*/
diff --git a/Data Structures/C-Strings/ex1/ft_strncpy.c b/Data Structures/C-Strings/ex1/ft_strncpy.c
index e69de29..305e908 100644
--- a/Data Structures/C-Strings/ex1/ft_strncpy.c	
+++ b/Data Structures/C-Strings/ex1/ft_strncpy.c	
@@ -0,0 +1,49 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncpy.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@learner.42.tech>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 12:35:37 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 12:55:02 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+#include <stdlib.h>
+
+char	*ft_strncpy(char *dest, char *src, unsigned int n)
+{
+	unsigned int	i;
+
+	i = 0;
+	while (src[i] != '\0' && i < n)
+	{
+		dest[i] = src[i];
+		i++;
+	}
+	while (i < n)
+	{
+		dest[i] = '\0';
+		i++;
+	}
+	return (dest);
+}
+/*
+int	main(void)
+{
+	unsigned int	size = 30;
+	char 	src[] = "Salut, je suis Lumi :3";
+	char	dst[30] = {0};
+	int		i = 0;
+	
+	ft_strncpy(dst, src, size);
+	while (dst[i])
+	{
+		write(1, &dst[i], 1);
+		i++;
+	}
+	write(1, "\n", 1);
+	return (0);
+}*/
diff --git a/Data Structures/C-Strings/ex2/ft_strcmp.c b/Data Structures/C-Strings/ex2/ft_strcmp.c
index e69de29..0dd3bbf 100644
--- a/Data Structures/C-Strings/ex2/ft_strcmp.c	
+++ b/Data Structures/C-Strings/ex2/ft_strcmp.c	
@@ -0,0 +1,83 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strcmp.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 13:44:05 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 15:55:22 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+int	ft_strcmp(char *s1, char *s2)
+{
+	int	i;
+
+	i = 0;
+	while (s1[i] != '\0' && s1[i] == s2[i])
+		i++;
+	return ((unsigned char)s1[i] - (unsigned char)s2[i]);
+}
+/*
+void	ft_putchar(char chara)
+{
+	write(1, &chara, 1);
+}
+
+void	ft_putstr(char *str)
+{
+	int	i;
+
+	i = 0;
+	while (str[i])
+	{
+		ft_putchar(str[i]);
+		i++;
+	}
+}
+
+int	main(void)
+{
+	char	*s1 = "Lumi";
+	char	*s2 = "Lumi";
+	char	*s3 = "LumX";
+	char	*rdmvar = "Pasteque";
+	char	*nullvar = "NULL";
+	// Test 1
+	write(1, "Test avec s1 (", 14);
+	ft_putstr(s1);
+	write(1, ") et s2 (", 9);
+	ft_putstr(s2);
+	write(1, ") : \n", 5);
+	if (ft_strcmp(s1, s2) == 0)
+		write(1, "Test 1 : OK :3", 14);
+	else
+		write(1, "Test 1 : Not OK :(", 18);
+	ft_putchar('\n');
+	// Test 2
+	write(1, "Test avec s1 (", 14);
+	ft_putstr(s1);
+	write(1, ") et s3 (", 9);
+	ft_putstr(s3);
+	write(1, ") : \n", 5);
+	if (ft_strcmp(s1, s3) == 0)
+		write(1, "Test 2 : OK :3", 14);
+	else
+		write(1, "Test 2 : Not OK :(", 18);
+	ft_putchar('\n');
+	// Test 3
+	write(1, "Test avec NULLVAR (", 19);
+	ft_putstr(nullvar);
+	write(1, ") et rdmvar (", 13);
+	ft_putstr(rdmvar);
+	write(1, ") : \n", 5);
+	if (ft_strcmp(nullvar, rdmvar) == 0)
+		write(1, "Test 3 : OK :3", 14);
+	else
+		write(1, "Test 3 : Not OK :(", 18);
+	ft_putchar('\n');
+	return (0);
+}*/
diff --git a/Data Structures/C-Strings/ex3/ft_strncmp.c b/Data Structures/C-Strings/ex3/ft_strncmp.c
index e69de29..7d761a7 100644
--- a/Data Structures/C-Strings/ex3/ft_strncmp.c	
+++ b/Data Structures/C-Strings/ex3/ft_strncmp.c	
@@ -0,0 +1,130 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncmp.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 13:44:05 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 15:55:40 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+#include <unistd.h>
+
+int	ft_strncmp(char *s1, char *s2, unsigned int n)
+{
+	unsigned int	i;
+
+	i = 0;
+	if (n == 0)
+		return (0);
+	while (s1[i] != '\0' && s1[i] == s2[i] && i < n - 1)
+		i++;
+	return ((unsigned char)s1[i] - (unsigned char)s2[i]);
+}
+/*
+void	ft_putnbr(int nb)
+{
+	char	value;
+
+	if (nb == -2147483648)
+	{
+		write(1, "-2147483648", 11);
+		return ;
+	}
+	if (nb < 0)
+	{
+		write(1, "-", 1);
+		nb = -nb;
+	}
+	if (nb > 9)
+	{
+		ft_putnbr(nb / 10);
+	}
+	value = nb % 10 + '0';
+	write(1, &value, 1);
+}
+
+void	ft_putchar(char chara)
+{
+	write(1, &chara, 1);
+}
+
+void	ft_putstr(char *str)
+{
+	int	i;
+
+	i = 0;
+	while (str[i])
+	{
+		ft_putchar(str[i]);
+		i++;
+	}
+}
+
+int main(void)
+{
+	char	*s1 = "Lumiere";
+	char	*s2 = "Luminescense";
+	char	*s3 = "Lumi";
+	char	*rdmvar = "Pasteque";
+	char	*nullvar = "NULL";
+	int		val;
+	// Test 1
+	val = 4;
+	write(1, "Test avec s1 (", 14);
+	ft_putstr(s1);
+	write(1, ") et s2 (", 9);
+	ft_putstr(s2);
+	write(1, ") de valeur ", 13);
+	ft_putnbr(val);
+	write(1, ": \n", 3);
+	if (ft_strncmp(s1, s2, val) == 0)
+		write(1, "Test 1 : OK :3", 14);
+	else
+		write(1, "Test 1 : Not OK :(", 18);
+	ft_putchar('\n');
+	// Test 2
+	val = 5;
+	write(1, "Test avec s1 (", 14);
+	ft_putstr(s1);
+	write(1, ") et s2 (", 9);
+	ft_putstr(s2);
+	write(1, ") de valeur ", 13);
+	ft_putnbr(val);
+	write(1, ": \n", 3);
+	if (ft_strncmp(s1, s2, val) == 0)
+		write(1, "Test 2 : OK :3", 14);
+	else
+		write(1, "Test 2 : Not OK :(", 18);
+	ft_putchar('\n');
+	// Test 3
+	val = 3;
+	write(1, "Test avec s1 (", 14);
+	ft_putstr(s1);
+	write(1, ") et s3 (", 9);
+	ft_putstr(s3);
+	write(1, ") de valeur ", 13);
+	ft_putnbr(val);
+	write(1, ": \n", 3);
+	if (ft_strncmp(nullvar, rdmvar, val) == 0)
+		write(1, "Test 3 : OK :3", 14);
+	else
+		write(1, "Test 3 : Not OK :(", 18);
+	ft_putchar('\n');
+	// Test 4
+	val = 3;
+	write(1, "Test avec NULLVAR (", 19);
+	ft_putstr(nullvar);
+	write(1, ") et rdmvar (", 13);
+	ft_putstr(rdmvar);
+	write(1, ") de valeur ", 13);
+	ft_putnbr(val);
+	write(1, ": \n", 3);
+	if (ft_strncmp(nullvar, rdmvar, val) == 0)
+		write(1, "Test 4 : OK :3", 14);
+	else
+		write(1, "Test 4 : Not OK :(", 18);
+	ft_putchar('\n');
+	return (0);
+}*/
diff --git a/Data Structures/C-Strings/ex4/ft_strcat.c b/Data Structures/C-Strings/ex4/ft_strcat.c
index e69de29..6bac896 100644
--- a/Data Structures/C-Strings/ex4/ft_strcat.c	
+++ b/Data Structures/C-Strings/ex4/ft_strcat.c	
@@ -0,0 +1,40 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strcat.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@learner.42.tech>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 17:44:18 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 18:04:08 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+char	*ft_strcat(char *dest, char *src)
+{
+	unsigned int	i;
+	unsigned int	j;
+
+	i = 0;
+	j = 0;
+	while (dest[i])
+		i++;
+	while (src[j])
+	{
+		dest[i + j] = src[j];
+		j++;
+	}
+	dest[i + j] = '\0';
+	return (dest);
+}
+/*
+int	main(void)
+{
+	char	dst[25] = "Salut :3 ";
+	char	src[] = "Je suis Lumi ^w^";
+
+	ft_strcat(dst, src);
+	write(1, dst, 25);
+}*/
diff --git a/Data Structures/C-Strings/ex5/ft_strncat.c b/Data Structures/C-Strings/ex5/ft_strncat.c
index e69de29..6996f38 100644
--- a/Data Structures/C-Strings/ex5/ft_strncat.c	
+++ b/Data Structures/C-Strings/ex5/ft_strncat.c	
@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncat.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@learner.42.tech>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 18:04:58 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 18:39:31 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+char	*ft_strncat(char *dest, char *src, unsigned int nb)
+{
+	unsigned int	i;
+	unsigned int	j;
+
+	i = 0;
+	j = 0;
+	while (dest[i])
+		i++;
+	while (src[j] && j < nb)
+	{
+		dest[i + j] = src[j];
+		j++;
+	}
+	dest[i + j] = '\0';
+	return (dest);
+}
+/*
+int     main(void)
+{
+        char    dst[100] = "Salut :3 ";
+        char    src[] = "Je suis Lumi ^w^";
+	unsigned int	nb = 26;
+
+	ft_strncat(dst, src, nb);
+	write(1, dst, 25);
+}*/
diff --git a/Data Structures/C-Strings/ex6/ft_strstr.c b/Data Structures/C-Strings/ex6/ft_strstr.c
index e69de29..283ee1c 100644
--- a/Data Structures/C-Strings/ex6/ft_strstr.c	
+++ b/Data Structures/C-Strings/ex6/ft_strstr.c	
@@ -0,0 +1,53 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strstr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@learner.42.tech>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 18:09:44 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 18:41:42 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+char	*ft_strstr(char *str, char *to_find)
+{
+	int	i;
+	int	j;
+
+	i = 0;
+	if (to_find[0] == '\0')
+		return (str);
+	while (str[i])
+	{
+		j = 0;
+		while (str[i + j] == to_find[j] && to_find[j])
+			j++;
+		if (to_find[j] == '\0')
+			return (&str[i]);
+		i++;
+	}
+	return (0);
+}
+/*
+int	main(void)
+{
+	char	*st = "JVE!5toU6Bnd1Dn8zBs2h3kLM9Fkeo=;Cj>=THqcN;5iJS5$JKw3E4iJuc";
+	char	*find = "j>=THqcN;5";
+	char	*res;
+
+	res = ft_strstr(st, find);
+	if (res)
+	{
+		write(1, "J'ai un truc ! C'est SA : ", 26);
+		write(1, res, 10); 
+		write(1, "\n", 1);
+	}
+	else
+	{
+		write(1, "Y'as rien dans ton tas de merde Lumi.\n", 38);
+	}
+	return (0);
+}*/
diff --git a/Data Structures/C-Strings/ex7/ft_atoi.c b/Data Structures/C-Strings/ex7/ft_atoi.c
index e69de29..72d9825 100644
--- a/Data Structures/C-Strings/ex7/ft_atoi.c	
+++ b/Data Structures/C-Strings/ex7/ft_atoi.c	
@@ -0,0 +1,106 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoi.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lclerel- <lclerel-@learner.42.tech>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/24 12:58:12 by lclerel-          #+#    #+#             */
+/*   Updated: 2026/03/24 13:23:45 by lclerel-         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+int	ft_atoi(char *str)
+{
+	int	i;
+	int	sign;
+	int	res;
+
+	res = 0;
+	i = 0;
+	sign = 1;
+	while (str[i] == ' ' || (str[i] >= 9 && str[i] <= 13))
+		i++;
+	while (str[i] == '-' || str[i] == '+')
+	{
+		if (str[i] == '-')
+			sign *= -1;
+		i++;
+	}
+	while (str[i] >= '0' && str[i] <= '9')
+	{
+		res = (res * 10) + (str[i] - '0');
+		i++;
+	}
+	return (res * sign);
+}
+
+/*
+void	ft_putnbr(int nb)
+{
+	char	value;
+
+	if (nb == -2147483648)
+	{
+		write(1, "-2147483648", 11);
+		return ;
+	}
+	if (nb < 0)
+	{
+		write(1, "-", 1);
+		nb = -nb;
+	}
+	if (nb > 9)
+	{
+		ft_putnbr(nb / 10);
+	}
+	value = nb % 10 + '0';
+	write(1, &value, 1);
+}
+
+int	main(void)
+{
+	int	res;
+
+	// Test 1
+	write(1, "/~~~Test 1~~~\\\n", 15);
+	write(1, "> Test avec -------+-----101010 : <\n", 36);
+	res = ft_atoi(" -------+-----101010");
+	if (res == -101010)
+		write(1, "> OK. :3 <\n", 11);
+	else 
+		write(1, "> Not OK :( <\n", 14);
+	write(1, "> Resultat retourner : ", 23);
+	ft_putnbr(res);
+	write(1, " <\n\\~~~Test 1~~~/\n\n", 18);
+	// Fin Test 1
+	write(1, "\n", 1);
+	// Test 2
+	write(1, "/~~~Test 2~~~\\\n", 15);
+	write(1, "> Test avec NULL : <\n", 21);
+	res = ft_atoi("NULL");
+	if (res == 1)
+		write(1, "> OK. :3 <\n", 11);
+	else
+		write(1, "> Not OK :( <\n", 14);
+	write(1, "> Resultat retourner : ", 23);
+	ft_putnbr(res);
+	write(1, " <\n\\~~~Test 2~~~/\n", 18);
+	// Fin Test 2
+	write(1, "\n", 1);
+	// Test 3
+	write(1, "/~~~Test 3~~~\\\n", 15);
+	write(1, "> Test avec 213d6516 : <\n", 25);
+	res = ft_atoi("213d6516");
+	if (res == 213)
+		write(1, "> OK. :3 <\n", 11);
+	else
+		write(1, "> Not OK :( <\n", 14);
+	write(1, "> Resultat retourner : ", 23);
+	ft_putnbr(res);
+	write(1, " <\n\\~~~Test 3~~~/\n", 18);
+	// Fin Test 3
+	return (0);
+}*/
\ No newline at end of file