#include <stdio.h>
#include <string.h>

int length(char *str)
{
    int index;
    
    index = 0;
    while (str[index] != '\0')
    {
        index++;
    }
    return (index);
}
char *ft_strncat(char *dest, char *src, unsigned int nb)
{
    int index;
    index = 0;
    int len = length(dest);
    while (src[index] != '\0' && index < nb)
    {
        dest[len] = src[index];
        index++;
        len++;
    }
    while (index < nb)
    {
        dest[len] = '\0';
        index++;
    }
    return (dest);
}
int main() {
    char dest[] = "Hello";
    char src[] = "jdsw";
    printf("%s\n",ft_strncat(dest, src, 20));
    return 0;
}