一个C++程序

#include<iostream> using namespace std; class Time {public: int hour; int minute; int sec; };

int main() { void set_time(Time&); void show_time(Time&); Time t1; set_time(t1); show_time(t1); Time t2; set_time(t2); show_time(t2); return 0; }

void set_time(Time& t) { cin>>t.hour; cin>>t.minute; cin>>t.sec; }

void show_time(Time& t) { cout<<t.hour<<":"<<t.minute<<":"<<t.sec<<endl; }