commit e0eb95588f7d37ca7fb17a6734dc67c8599c190a
Author: starnakin <camille@chauvet.pro>
Date:   Fri Sep 6 23:08:29 2024 +0200

    add: strlen

diff --git a/src/string/strlen.c b/src/string/strlen.c
new file mode 100644
index 0000000..5cad17d
--- /dev/null
+++ b/src/string/strlen.c
@@ -0,0 +1,10 @@
+#include <stddef.h>
+
+size_t	strlen(const char *str)
+{
+	const char *start = str;
+
+	while (*start != '\0')
+		start++;
+	return start - str;
+}