#include <bits/stdc++.h>
using namespace std;
class Vector2{
public:
float x, y;
//1
Vector2(){
x = 0;
y = 0;
}
//1
Vector2(float a, float b){
x = a;
y = b;
}
//3(etc hahha)
void up(){
x = 0;
y = -1;
}
//5
float getMagnitude(){
return sqrt(x*x + y*y);
}
//2 - normalize overriden
void normalize(){
float magnitude = getMagnitude();
if(magnitude == 0) return;
x /= magnitude;
y /= magnitude;
}
/*
//2 - normalize new instance(inda ko kung pano ni basta arog kani dapat)
Vector2 normalize(){
Vector2 res(x, y);
res.normalize();
return res;
}
*/
//4 - Operators(+, +=, ==, != lang)
Vector2 operator+(Vector2 const& v){
Vector2 res;
res.x = x + v.x;
res.y = y + v.y;
return res;
}
void operator+=(Vector2 const& v){
x += v.x;
y += v.y;
}
bool operator==(Vector2 const& v){
return x == v.x && y == v.y;
}
bool operator!=(Vector2 const& v){
return x != v.x && y != v.y;
}
void print(){
cout << x << ", " << y << "\n";
}
};
int main() {
Vector2 a(1,2), b(1,5);
a = a+b;
a += b;
if(a == b){
cout << "OK\n";
}
//a.up();
a.normalize();
a.print();
return 0;
}