Cpp：类定义范例;

#include <iostream>

using namespace std;

class Box{
    public:
        double length;
        double breadth;
        double height;
};

int main(){
    Box Box1;
    double volume=0.0;

    Box1.height=5.0;
    Box1.length=6.0;
    Box1.breadth=7.0;

    volume=Box1.height*Box1.length*Box1.breadth;
    cout << volume << endl;

    return 0;
}