第一个C++例子

#include <iostream>
using namespace std;

class Time
{
private:
    int hour;
    int minute;
    int second;
public:
    //Time() //无参够创函数
    //{
    //    hour = 0; minute = 0; second = 0;
    //}
    //Time(int h, int m, int s) //带参构造函数
    //{
    //    hour = h; minute = m; second = s;
    //}
    Time(int h = 0, int m = 0, int s = 0) : hour(h), minute(m), second(s){} //带参数初始化表的构造函数
    void Set(int h, int m, int s);
    void Show();
};

void Time::Set(int h, int m, int s)
{
    hour = h; minute = m; second = s;
}
void Time::Show()
{
    cout << hour << ":" << minute << ":" << second << endl;
}

int main()
{
    Time t1;
    t1.Show();
    t1.Set(6, 18, 16);
    t1.Show();

    Time t2(12, 11, 10);
    t2.Show();

    return 0;
}