show current computer time program in C++

#include <iostream>
#include <ctime>
using namespace std;

int main( )
{
   // current date/time based on current system
   time_t now = time(0);
 
   // convert now to string form
   char* dt = ctime(&now);
   cout << "The local date and time is: " << dt;
   // convert now to tm struct for UTC
   tm *gmtm = gmtime(&now);
   dt = asctime(gmtm);
   cout << "\nThe UTC date and time is:"<< dt << endl;
}