commit 6c4b2222afd37724cebc2aabaf8f04a357918ace
Author: Adam Joly <adjoly@2E2.42angouleme.fr>
Date:   Fri Nov 3 16:21:15 2023 +0100

    first commit

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5b4d1b0
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,56 @@
+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2023/11/01 11:03:22 by adjoly            #+#    #+#              #
+#    Updated: 2023/11/03 11:59:46 by adjoly           ###   ########.fr        #
+#                                                                              #
+# **************************************************************************** #
+
+NAME = libft.a
+
+CC = cc
+
+SRCS = ft_atoi.c \
+		ft_bzero.c \
+		ft_isalnum.c \
+		ft_isalpha.c \
+		ft_isascii.c \
+		ft_isdigit.c \
+		ft_putchar_fd.c \
+		ft_putnbr_fd.c \
+		ft_putstr_fd.c \
+		ft_memcpy.c \
+		ft_memset.c \
+		ft_strlcpy.c \
+		ft_strlen.c \
+		ft_substr.c \
+		ft_tolower.c \
+		ft_toupper.c \
+
+OBJS = $(SRCS:.c=.o)
+
+FLAGS = -Werror -Wall -Wextra
+
+HEADER = libft.h
+
+$(NAME): $(OBJS)
+	ar -rcs	$(NAME) $(OBJS)
+
+%.o: %.c
+	$(CC) $(FLAGS) -I $(HEADER) $< -c -o $@
+
+all: $(NAME)
+
+clean:
+	rm -f $(OBJS)
+
+fclean: clean
+	rm -f $(NAME)
+
+re: fclean all
+
+.PHONY: clean all re fclean
\ No newline at end of file
diff --git a/ft_atoi.c b/ft_atoi.c
new file mode 100644
index 0000000..ec4eecb
--- /dev/null
+++ b/ft_atoi.c
@@ -0,0 +1,37 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoi.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 09:00:27 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/01 17:15:05 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_atoi(const char	*nptr)
+{
+	int	i;
+	int	sign;
+	int	nbr;
+
+	i = 0;
+	sign = 1;
+	nbr = 0;
+	while ((nptr[i] >= 7 && nptr[i] <= 13) || nptr[i] == 32)
+		i++;
+	if (nptr[i] == '-')
+	{
+		sign *= -1;
+		i++;
+	}
+	else if (nptr[i] == '+')
+		i++;
+	while (nptr[i] >= '0' && nptr[i] <= '9')
+	{
+		nbr = nbr * 10 + (nptr[i] - '0');
+		i++;
+	}
+	return (nbr * sign);
+}
diff --git a/ft_atoi.o b/ft_atoi.o
new file mode 100644
index 0000000..afb0010
Binary files /dev/null and b/ft_atoi.o differ
diff --git a/ft_bzero.c b/ft_bzero.c
new file mode 100644
index 0000000..c6902d8
--- /dev/null
+++ b/ft_bzero.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_bzero.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/03 11:58:03 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 12:03:51 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_bzero(void *s, size_t n)
+{
+	ft_memset(s, '\0', n);
+}
diff --git a/ft_bzero.o b/ft_bzero.o
new file mode 100644
index 0000000..62d7f17
Binary files /dev/null and b/ft_bzero.o differ
diff --git a/ft_calloc.c b/ft_calloc.c
new file mode 100644
index 0000000..8504518
--- /dev/null
+++ b/ft_calloc.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_calloc.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/01 16:02:26 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/01 16:06:22 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*calloc(size_t nmemb, size_t size)
+{
+	
+}
diff --git a/ft_isalnum.c b/ft_isalnum.c
new file mode 100644
index 0000000..b41e0b0
--- /dev/null
+++ b/ft_isalnum.c
@@ -0,0 +1,19 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isalnum.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 08:31:10 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 11:49:58 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_isalnum(int c)
+{
+	if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
+		|| (c >= '0' && c <= '9'))
+		return (1);
+	return (0);
+}
diff --git a/ft_isalnum.o b/ft_isalnum.o
new file mode 100644
index 0000000..aecf709
Binary files /dev/null and b/ft_isalnum.o differ
diff --git a/ft_isalpha.c b/ft_isalpha.c
new file mode 100644
index 0000000..5585ab7
--- /dev/null
+++ b/ft_isalpha.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isalpha.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 08:31:10 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 11:52:37 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_isalpha(int c)
+{
+	if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
+		return (1);
+	return (0);
+}
diff --git a/ft_isalpha.o b/ft_isalpha.o
new file mode 100644
index 0000000..0bd62e8
Binary files /dev/null and b/ft_isalpha.o differ
diff --git a/ft_isascii.c b/ft_isascii.c
new file mode 100644
index 0000000..32648e4
--- /dev/null
+++ b/ft_isascii.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isascii.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 08:31:10 by adjoly            #+#    #+#             */
+/*   Updated: 2023/10/31 08:46:18 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_isascii(int c)
+{
+	if (c >= 0 && c <= 127)
+		return (1);
+	return (0);
+}
diff --git a/ft_isascii.o b/ft_isascii.o
new file mode 100644
index 0000000..11cdcbf
Binary files /dev/null and b/ft_isascii.o differ
diff --git a/ft_isdigit.c b/ft_isdigit.c
new file mode 100644
index 0000000..79e2778
--- /dev/null
+++ b/ft_isdigit.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isdigit.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 08:50:01 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 11:53:33 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_isdigit(int c)
+{
+	if (c >= '0' && c <= '9')
+		return (1);
+	return (0);
+}
diff --git a/ft_isdigit.o b/ft_isdigit.o
new file mode 100644
index 0000000..9473b5f
Binary files /dev/null and b/ft_isdigit.o differ
diff --git a/ft_memcpy.c b/ft_memcpy.c
new file mode 100644
index 0000000..0c0abb3
--- /dev/null
+++ b/ft_memcpy.c
@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memcpy.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/02 10:21:55 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/02 11:30:30 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_memcpy(void *dest, const void *src, size_t n)
+{
+	size_t	i;
+
+	i = 0;
+	if (src == NULL || dest == NULL || n == 0)
+	{
+		return (dest);
+	}
+	while (i < n)
+	{
+		((unsigned char *)dest)[i] = ((unsigned char *)src)[i];
+		i++;
+	}
+	return (dest);
+}
diff --git a/ft_memcpy.o b/ft_memcpy.o
new file mode 100644
index 0000000..c12f998
Binary files /dev/null and b/ft_memcpy.o differ
diff --git a/ft_memmove.c b/ft_memmove.c
new file mode 100644
index 0000000..bc2ebdf
--- /dev/null
+++ b/ft_memmove.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memmove.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/03 15:04:04 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 15:57:15 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_memmove(void *dest, const void *src, size_t n)
+{
+	
+}
diff --git a/ft_memset.c b/ft_memset.c
new file mode 100644
index 0000000..a9d8143
--- /dev/null
+++ b/ft_memset.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memset.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 17:40:22 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 12:11:08 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_memset(void *s, int c, size_t n)
+{
+	size_t	i;
+
+	i = 0;
+	while (i < n)
+	{
+		((char *)(s))[i] = c;
+		i++;
+	}
+	return (s);
+}
diff --git a/ft_memset.o b/ft_memset.o
new file mode 100644
index 0000000..936618d
Binary files /dev/null and b/ft_memset.o differ
diff --git a/ft_putchar_fd.c b/ft_putchar_fd.c
new file mode 100644
index 0000000..b644921
--- /dev/null
+++ b/ft_putchar_fd.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putchar_fd.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 11:42:17 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/01 17:15:09 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putchar_fd(char c, int fd)
+{
+	write(fd, &c, 1);
+}
diff --git a/ft_putchar_fd.o b/ft_putchar_fd.o
new file mode 100644
index 0000000..786101f
Binary files /dev/null and b/ft_putchar_fd.o differ
diff --git a/ft_putnbr_fd.c b/ft_putnbr_fd.c
new file mode 100644
index 0000000..a21fe77
--- /dev/null
+++ b/ft_putnbr_fd.c
@@ -0,0 +1,38 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbr_fd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 11:52:46 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 11:54:29 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbr_fd(int n, int fd)
+{
+	unsigned int	nbr;
+
+	if (n < 0)
+	{
+		write(fd, "-", 1);
+		nbr = -n;
+	}
+	else
+		nbr = n;
+	if (nbr < 10)
+		write(fd, &(char){nbr + '0'}, 1);
+	else
+	{
+		ft_putnbr_fd(nbr / 10, fd);
+		write(fd, &(char){(nbr + '0') % 10}, 1);
+	}
+}
+
+// int	main(void)
+// {
+// 	ft_putnbr_fd(10, 1);
+// }
diff --git a/ft_putnbr_fd.o b/ft_putnbr_fd.o
new file mode 100644
index 0000000..2560b2b
Binary files /dev/null and b/ft_putnbr_fd.o differ
diff --git a/ft_putstr_fd.c b/ft_putstr_fd.c
new file mode 100644
index 0000000..1f63bff
--- /dev/null
+++ b/ft_putstr_fd.c
@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putstr_fd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 11:45:55 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/01 17:14:02 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putstr_fd(char *s, int fd)
+{
+	int	i;
+
+	i = 0;
+	while (s[i])
+	{
+		write(fd, &s[i], 1);
+		i++;
+	}
+}
diff --git a/ft_putstr_fd.o b/ft_putstr_fd.o
new file mode 100644
index 0000000..12aaf0b
Binary files /dev/null and b/ft_putstr_fd.o differ
diff --git a/ft_strchr.c b/ft_strchr.c
new file mode 100644
index 0000000..237ed3f
--- /dev/null
+++ b/ft_strchr.c
@@ -0,0 +1,34 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strchr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/01 15:45:18 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/02 10:08:05 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+char	*ft_strchr(const char *s, int c)
+{
+	int		i;
+	int		j;
+	char	*str_result;
+
+	i = 0;
+	j = 0;
+	while (s[i] != c || s[i])
+		i++;
+	if (s[i] == c)
+	{
+		while (s[i])
+		{
+			str_result[j] = s[j + i];
+			j++;
+		}
+		return (str_result);
+	}
+	str_result[0] = '\0';
+	return (str_result);
+}
diff --git a/ft_strlcat.c b/ft_strlcat.c
new file mode 100644
index 0000000..b2d1c87
--- /dev/null
+++ b/ft_strlcat.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlcat.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/03 15:59:31 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 16:03:46 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include 'libft.h'
+
+size_t	strlcat(char *dst, const char *src, size_t size)
+{
+	
+}
\ No newline at end of file
diff --git a/ft_strlcpy.c b/ft_strlcpy.c
new file mode 100644
index 0000000..7299a2e
--- /dev/null
+++ b/ft_strlcpy.c
@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlcpy.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/01 09:52:45 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 16:15:47 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+size_t	ft_strlcpy(char	*dst, const char	*src, size_t	size)
+{
+	size_t	i;
+
+	i = 0;
+	while (i < size - 1 && src[i])
+	{
+		dst[i] = src[i];
+		i++;
+	}
+	if (i < size)
+		dst[i] = '\0';
+	return (ft_strlen(src));
+}
diff --git a/ft_strlcpy.o b/ft_strlcpy.o
new file mode 100644
index 0000000..3e5e975
Binary files /dev/null and b/ft_strlcpy.o differ
diff --git a/ft_strlen.c b/ft_strlen.c
new file mode 100644
index 0000000..5ccf0b8
--- /dev/null
+++ b/ft_strlen.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlen.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/30 18:15:57 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/01 17:15:12 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+size_t	ft_strlen(const char *s)
+{
+	int	i;
+
+	i = 0;
+	while (s[i])
+		i++;
+	return (i);
+}
diff --git a/ft_strlen.o b/ft_strlen.o
new file mode 100644
index 0000000..0bbb64d
Binary files /dev/null and b/ft_strlen.o differ
diff --git a/ft_substr.c b/ft_substr.c
new file mode 100644
index 0000000..c945549
--- /dev/null
+++ b/ft_substr.c
@@ -0,0 +1,39 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_substr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/02 17:59:58 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 09:56:01 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_substr(char const *s, unsigned int start, size_t len)
+{
+	size_t	i;
+	char	*result;
+
+	i = 0;
+	if (s == NULL || len == 0)
+		return (NULL);
+	if (start >= ft_strlen(s))
+	{
+		result = malloc(1);
+		result[0] = '\0';
+		return (result);
+	}
+	result = malloc(len * sizeof(char));
+	if (result == NULL)
+		return (NULL);
+	while (i < len && s[start + i])
+	{
+		result[i] = s[start + i];
+		i++;
+	}
+	result[i] = '\0';
+	return (result);
+}
diff --git a/ft_substr.o b/ft_substr.o
new file mode 100644
index 0000000..94c2f11
Binary files /dev/null and b/ft_substr.o differ
diff --git a/ft_tolower.c b/ft_tolower.c
new file mode 100644
index 0000000..56bb63e
--- /dev/null
+++ b/ft_tolower.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_tolower.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 17:15:28 by adjoly            #+#    #+#             */
+/*   Updated: 2023/10/31 17:26:10 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_tolower(int c)
+{
+	if (c >= 'A' && c <= 'Z')
+		return (c + 32);
+	return (c);
+}
diff --git a/ft_tolower.o b/ft_tolower.o
new file mode 100644
index 0000000..9fde8fe
Binary files /dev/null and b/ft_tolower.o differ
diff --git a/ft_toupper.c b/ft_toupper.c
new file mode 100644
index 0000000..5066e55
--- /dev/null
+++ b/ft_toupper.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_toupper.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/10/31 17:15:28 by adjoly            #+#    #+#             */
+/*   Updated: 2023/10/31 17:26:15 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_toupper(int c)
+{
+	if (c >= 'a' && c <= 'z')
+		return (c - 32);
+	return (c);
+}
diff --git a/ft_toupper.o b/ft_toupper.o
new file mode 100644
index 0000000..374dad9
Binary files /dev/null and b/ft_toupper.o differ
diff --git a/libft.a b/libft.a
new file mode 100644
index 0000000..7df3753
Binary files /dev/null and b/libft.a differ
diff --git a/libft.h b/libft.h
new file mode 100644
index 0000000..233bd10
--- /dev/null
+++ b/libft.h
@@ -0,0 +1,40 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   libft.h                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/01 10:06:03 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/03 15:57:10 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef LIBFT_H
+# define LIBFT_H
+
+# include <stddef.h>
+# include <stdlib.h>
+# include <unistd.h>
+
+int		ft_atoi(const char	*nptr);
+void	*ft_calloc(size_t nmemb, size_t size);
+int		ft_isalnum(int c);
+int		ft_isalpha(int c);
+int		ft_isascii(int c);
+int		ft_isdigit(int c);
+void	ft_bzero(void *s, size_t n);
+void	*ft_memset(void *s, int c, size_t n);
+void	*ft_memmove(void *dest, const void *src, size_t n);
+void	*ft_memcpy(void *dest, const void *src, size_t n);
+void	ft_putchar_fd(char c, int fd);
+void	ft_putnbr_fd(int n, int fd);
+void	ft_putstr_fd(char *s, int fd);
+char	*ft_strchr(const char *s, int c);
+size_t	ft_strlcpy(char	*dst, const char	*src, size_t	size);
+size_t	ft_strlen(const char *s);
+char	*ft_substr(char const *s, unsigned int start, size_t len);
+int		ft_tolower(int c);
+int		ft_toupper(int c);
+
+#endif
\ No newline at end of file