Source code tentang overriding

#include "iostream.h"
class CRectangle
{
int width, height;
public:
CRectangle (int,int);
int area (void) {return (width*height);}
};
CRectangle::CRectangle (int a, int b)
{
width = a;
height = b;
}
int main () {
CRectangle rect (3,4);
CRectangle rectb (5,6);
cout<< "rect area: " << rect.area()<< endl; cout<< "rectb area: " << rectb.area()<< endl; }