#include <stdlib.h>
#include <stdio.h>

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

    if (dest == NULL || src == NULL) {
        return NULL;
    }
    if (nb < 0) {
        return dest;
    }
    while (dest[i] != '\0') {
        i++;
    }
    while (j < nb && src[j] != '\0') {
        dest[i] = src[j];
        i++;
        j++;
    }
    dest[i] = '\0';
    return dest;
}

int main()
{
    char dest[50] = "Hello";
    my_strncat(dest, "World", 8);
    printf("Résultat : %s\n", dest); 
    return 0;
}