对象的赋值

 1 #include <iostream>
 2 
 3 /* run this program using the console pauser or add your own getch, system("pause") or input loop */
 4 using namespace std;
 5 class Box
 6 {
 7     public:
 8         Box(int=10,int=10,int=10);
 9         int volume();
10     private:
11         int height;
12         int width;
13         int length;
14 };
15 Box::Box(int h,int w,int len)
16 {
17     height=h;
18     width=w;
19     length=len;
20 }
21 int Box::volume()
22 {
23     return(height*width*length);
24 }
25 int main(int argc, char** argv) {
26     Box box1(15,30,25),box2;
27     cout<<"The volume of box1 is "<<box1.volume()<<endl;
28     box2=box1;
29     cout<<"The volume of box2 is "<<box2.volume()<<endl;
30     return 0;
31 }