annexe.c

/*
** EPITECH PROJECT, 2025
** B-PSU-200-LYN-2-1-minishell1-pierre.baud
** File description:
** annexe
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "my.h"

int my_strlen(const char *str)
{
    int len = 0;

    while (str[len] != '\0') {
        len++;
    }
    return len;
}

char *my_strdup(const char *src)
{
    int len = my_strlen(src);
    char *dest = malloc((len + 1) * sizeof(char));
    int i = 0;

    if (dest == NULL) {
        return NULL;
    }
    for (; i < len; i++) {
        dest[i] = src[i];
    }
    dest[len] = '\0';
    return dest;
}

int my_strcmp(const char *s1, const char *s2)
{
    int i = 0;

    while (s1[i] != '\0' && s2[i] != '\0') {
        if (s1[i] != s2[i]) {
            return s1[i] - s2[i];
        }
        i++;
    }
    return s1[i] - s2[i];
}

char *my_strcpy(char *dest, const char *src)
{
    int i = 0;

    while (src[i] != '\0') {
        dest[i] = src[i];
        i++;
    }
    dest[i] = '\0';
    return dest;
}

char *my_strcat(char *dest, const char *src)
{
    int i = 0;
    int j = 0;

    while (dest[i] != '\0') {
        i++;
    }
    while (src[j] != '\0') {
        dest[i] = src[j];
        i++;
        j++;
    }
    dest[i] = '\0';
    return dest;
}