#include<iostream> using namespace std; class Rectangle { private:         int width, height, area; public:         Rectangle(int w=5, int h=10) {width=w; height=h;}         void setRectangle(int w, int h) {width=w; height=h;}         void calcArea(){area=width*height;}         int getArea(){return area;}         void print(); }; void Rectangle::print() {         cout<<"가로 : "<< width << ",세로 : " << height << ",넓이" << area <<endl; } void main() {         Rectangle r;         r.calcArea();         r.print(); }