#include<iostream>
#include<ctime>
#include<cstdlib>
#include<cstdio>

using namespace std;

int main()
{
    time_t t1=time(0);
    cout<<"Press any key to measure the time difference:\n";
    getchar();
    time_t t2=time(0);
    int t=t2-t1;
    cout<<endl<<endl;
    cout<<"Time gap between program run and your key press is:\n"<<t<<" sec\n";
}