c++练习

#include<iostream>
using namespace std;
class time
{
public:
int hour;
int minute;
int sec;
};
int main()
{
time t1;
cin>>t1.hour;
cin>>t1.minute;
cin>>t1.sec;
cout<<t1.hour<<":";
cout<<t1.minute<<":";
cout<<t1.sec<<endl;

}