algorithmization-and-programming/contest_05/04/main.cpp at main · VovaDVA/algorithmization-and-programming · GitHub

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class Point {private:
    double x, y, r, a;
    public:
    	Point(double x, double y) : x(x), y(y) {
    		r = sqrt(x * x + y * y);
        	a = atan2(y, x);
    	}
    	double get_x() const {
        	return x;
    	}
    	double get_y() const {
        	return y;
    	}
    	double get_r() const {
        	return r;
    	}
    	double get_a() const {
        	return a;
    	}
    	void set_x(double new_x) {
        	x = new_x;
    		r = sqrt(x * x + y * y);
        	a = atan2(y, x);
    	}
    	void set_y(double new_y) {
        	y = new_y;
    		r = sqrt(x * x + y * y);
        	a = atan2(y, x);
    	}
    	void set_r(double new_r) {
        	r = new_r;
    		x = r * cos(a);
        	y = r * sin(a);
    	}
    	void set_a(double new_a) {
        	a = new_a;
    		x = r * cos(a);
        	y = r * sin(a);
    	}
};