#include <iostream>
#include <time.h>using namespace std;
int main()
{
time_t myt=time(NULL); cout<<"sizeof(time_t) is:"<<sizeof(time_t)<<endl;
cout<<"myt is:"<<myt<<endl; time_t t;
time(&t); cout<<"t is:"<<t<<endl;
}
g++ -std=c++11 chrono_linux.cpp -o chrono_linux