[C++面向对象程序设计]第二章 类和对象的特征

2.

#include<iostream>
using namespace std;
class Time
{
	int hour;
	int minute;
	int sec;
public:
	void set()
	{cin>>hour;
	cin>>minute;
	cin>>sec;
	}
	void display()
	{
		cout<<hour<<":"<<minute<<":"<<sec<<endl;
	}
}t1;
int main()
{
	t1.set();
	t1.display();
	return 0;
}

3.

#include<iostream>
using namespace std;
class Time
{
	int hour;
	int minute;
	int sec;
public:
	void set()
	{cin>>hour;
	cin>>minute;
	cin>>sec;
	}
	void display()
	{
		cout<<hour<<":"<<minute<<":"<<sec<<endl;
	}
}t1;
int main()
{
	t1.set();
	t1.display();
	return 0;
}

6.

#include<iostream>
using namespace std;
class Time
{
	int hour;
	int minute;
	int sec;
public:
	void set()
	{cin>>hour;
	cin>>minute;
	cin>>sec;
	}
	void display()
	{
		cout<<hour<<":"<<minute<<":"<<sec<<endl;
	}
}t1;
int main()
{
	t1.set();
	t1.display();
	return 0;
}