guano231241234

#include <iostream>
#include <string>
using namespace std;
class Square{
	private:
		double side,area;
	public:
		Square(double side);
};
Square::Square(double side){
	this->side=side;
	this->area=side*side;
}
Square::print(){
	cout<<"Square: side= "<<this->side<<"area= "<<this->area<<"\n";
}
Square::set_side(double a){
	if(a>0){
		this->side=a;
		this->area=side*side;
	}
	return *this;
}
int main(){
	Square s(4);
	s.print();
	s.side(2.0);
	s.print();
	s.side(-33.0);
	s.print();
	return 0;
}