c++常量函数的理解

常量类只能调用常量函数，对于普通的类的函数可以调用常量函数，

常量数据成员的定义只能在类的外面进行初始化，

#include<iostream>using namespace std;class time{private:int hour, minute, second;public:time(int h, int m, int s){hour = h;minute = m;second = s;}void showtime() const;};void time::showtime()const{cout << hour << " " << minute << ":" << second << endl;}void main(){const time meeting(2, 4, 5);meeting.showtime();time classtime(4, 5, 6);classtime.showtime();system("pause");}