[C++] c++ 类与对象

#include <iostream>
using namespace std;
// 定义类
class Box
{
// public 类成员访问属性，公共成员是外部可访问的
public:
double length;
double breadth;
double height;
};
int main()
{
// 创建对象Box1
Box Box1;
// 创建对象Box2
Box Box2;
double volume = 0.0;
Box1.length = 1.0;
Box1.breadth = 2.0;
Box1.height = 3.0;
volume = Box1.length * Box1.breadth * Box1.height;
cout <<"Box1的体积：" << volume << endl;

Box2.length = 4.0;
Box2.breadth = 5.0;
Box2.height = 6.0;
volume = Box2.length * Box2.breadth * Box2.height;
cout << "Box1的体积：" << volume << endl;
system("pause");
return 0;
}