#include <cstring>
#include <iostream> 
#include <iomanip> 
#include <fstream> 
#include <string> 
#include <openssl/md5.h>

// to print MD5 
void printMD5(unsigned char* md, long size = MD5_DIGEST_LENGTH) { 
    for (int i=0; i<size; i++) { 
     std::cout<< std::hex << std::setw(2) << std::setfill('0') << (int) md[i]; 
    } 
} 


int main(int argc, char** argv)
{
    
if (argc != 2) { std::cout << "You must input an string value as the argument"; return -1; };  
  
  
unsigned char md5_result[MD5_DIGEST_LENGTH];
  
const unsigned char* pincode =  reinterpret_cast<unsigned char*>(argv[1]) ;

MD5(pincode, strlen( reinterpret_cast<const char*>(pincode) )  , md5_result);
  
printMD5(md5_result); 
  
std::cout << std::endl; 
  
}