how to compare string in c

54

julien@ubuntu:~/0x06$ cat 3-main.c
#include "main.h"
#include <stdio.h>

/**
 * main - check the code
 *
 * Return: Always 0.
 */
int main(void)
{
    char s1[] = "Hello";
    char s2[] = "World!";

    printf("%d\n", _strcmp(s1, s2));
    printf("%d\n", _strcmp(s2, s1));
    printf("%d\n", _strcmp(s1, s1));
    return (0);
}
julien@ubuntu:~/0x06$ gcc -Wall -pedantic -Werror -Wextra -std=gnu89 3-main.c 3-strcmp.c -o 3-strcmp
julien@ubuntu:~/0x06$ ./3-strcmp 
-15
15
0
julien@ubuntu:~/0x06$

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