#include <openssl/md5.h>
#include <stdio.h>

int main()
{
        char hash[50];
        char hash_done[50];
        char *hash_done_ptr;
        char tekst[50] = "testing";
        int i;

        MD5(tekst, strlen(tekst), hash);
        hash_done_ptr = &hash_done;
        for (i = 0; i < strlen(hash); i++) {
                sprintf(hash_done_ptr, "%02x", hash[i]);
                hash_done_ptr += 2;
        }
        printf("%s\n", hash_done);

        return;
}