Answer to Question #213929 in C++ for Doctor

Question

Assuming there is no error in main() complete the class Rectangle and its functions.

int main()

{

     Rectangle rect1(3.4, 5.68);

     Rectangle rect2(2.4, 4.68);

     if (rect1-- != ++rect2) //increment/decrement will add & subtract by 1 of each data members of class

           cout << ”\n Both are not of same size”;

     else

           cout << ”\n Both are of same size”;

     rect1.show(); \\will display values 2.4, 4.68      

     Rectangle rect3 = rect1 + rect2;

     rect3.show(); \\will display values 5.8, 10.36

     system(“pause”);

     return 0;

}

Answer 1

#include <iostream>
#include <cstdlib>
using namespace std;
class Rectangle{
	float w;
	float h;
public:
	Rectangle(){}
	Rectangle(float w, float h){
		this->w=w;
		this->h=h;
	}
	Rectangle operator--(int){
		w--;
		h--;
		return *this;
	}
	Rectangle operator++(){
		w++;
		h++;
		return *this;
	}
	Rectangle operator+(const Rectangle &other){
		return Rectangle(this->w + other.w, this->h + other.h);
	}
	bool operator!=(const Rectangle &other){
		return !(this->w == other.w && this->h == other.h);
	}
	void show(){
		cout<<endl<<w<<" "<<h<<endl;
	}
};
int main(){


	Rectangle rect1(3.4, 5.68);


	Rectangle rect2(2.4, 4.68);


	if (rect1-- != ++rect2) //increment/decrement will add & subtract by 1 of each data members of class
		cout << "\n Both are not of same size";
	else
		cout << "\n Both are of same size";


	rect1.show(); //will display values 2.4, 4.68      


	Rectangle rect3 = rect1 + rect2;


	rect3.show(); //will display values 5.8, 10.36


	system("pause");


	return 0;


}