对象数组应用实例

#include <iostream>
using namespace std;
class Box
{
public:
    Box(int h=10,int w=12,int len=15): height(h),width(w),length(len) { }
    int volume( );
private:
    int height;
    int width;
    int length;
};

int Box::volume( )
{
    return(height*width*length);
}

int main( )
{
    Box a[3]=
    {
        Box(),
        Box(15,18),
        Box(16,20,26)
    };
    cout<<"volume of a[0] is "<<a[0].volume( )<<endl;
    cout<<"volume of a[1] is "<<a[1].volume( )<<endl;
    cout<<"volume of a[2] is "<<a[2].volume( )<<endl;
    return 0;
}