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

int     len(char* str)
{
    int     i;

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

char* ft_strdup(char* src)
{
    char* arr;
    int             i;

    if(src == NULL)
        return NULL;
    arr = (char*)malloc(sizeof(char) * (len(src) + 1));
    i = 0;
    while (src[i] != '\0')
    {
        arr[i] = src[i];
        i++;
    }
    arr[i] = '\0';
    return (arr);
}

int main(void)
{
    char c[] = "";
    char *c1;
    c1 = ft_strdup(c);
    printf("%s", c1);
    free(c1);
    return 0;
}