strlcat

unsigned int    ft_strlcat(char *dest, char *src, unsigned int size)
{
    unsigned int    i;
    unsigned int    j;
    unsigned int    k;

    k = 0;
    while (src[k])
        k++;
    i = 0;
    while (dest[i])
        i++;
    if (size != 0)
    {
        j = 0;
        while (src[j] && i + j < size - 1)
        {
            dest[i + j] = src[j];
            j++;
        }
        dest[i + j] = '\0';
    }
    if (size < i)
        return (size + k);
    return (i + k);
}