explicita.cpp

C++的一些简单代码 希望能给初学者带来小小的帮助

#include <iostream>
using std::cout;
using std::endl;

class Cube{
public:
	double side;

	explicit Cube(double side);
	double volume();
	bool compareVolume(Cube A_cube);
};
Cube::Cube(double length):side(length){}

double Cube::volume(){return side*side*side;}

bool Cube::compareVolume(Cube A_cube) {return volume()>A_cube.volume();}

void main()
{
	Cube box1(5.0);
	Cube box2(3.0);
	if (box1.compareVolume(box2))
		cout<<"box1 is larger"<<endl<<box1.side<<endl;
	else
		cout<<"box2 is larger"<<endl;

	/*if (box1.compareVolume(50))  //加了explicit后这句话不能编译
		cout<<"box1 is larger"<<endl;
	else
		cout<<"box2 is larger"<<endl;*/
}