c++ demo 05 类

class Box{
public:
    double length;
    double breadth;
    double height;
    double  get(void);
    void set(double len,double bre,double hei);
};
double  Box::get(void) {
    return length*breadth*height;
}

void Box::set(double len, double bre, double hei) {
    length=len;
    breadth=bre;
    height=hei;
}





int main(){
    Box Box1;        // 声明 Box1，类型为 Box
    Box Box2;        // 声明 Box2，类型为 Box
    Box Box3;        // 声明 Box3，类型为 Box
    double volume = 0.0;     // 用于存储体积

    // box 1 详述
    Box1.height = 5.0;
    Box1.length = 6.0;
    Box1.breadth = 7.0;

    // box 2 详述
    Box2.height = 10.0;
    Box2.length = 12.0;
    Box2.breadth = 13.0;

    // box 1 的体积
    volume = Box1.height * Box1.length * Box1.breadth;
    cout << "Box1 的体积：" << volume <<endl;

    // box 2 的体积
    volume = Box2.height * Box2.length * Box2.breadth;
    cout << "Box2 的体积：" << volume <<endl;


    // box 3 详述
    Box3.set(16.0, 8.0, 12.0);
    volume = Box3.get();
    cout << "Box3 的体积：" << volume <<endl;
    return 0;





}