/* Project done in the classroom 
   17/04/2024
   https://tarini.di.unimi.it/teaching/3DVG2026/c++lab/
*/


#include <iostream>

class Vector {
public:
    float x, y, z;

    void print() const {
        std::cout << "(" << x << ", " << y << ", " << z << ")" << std::endl;
    }

	// constructor
    Vector(float _x, float _y, float _z) : x(_x), y(_y), z(_z) {}

	// empty constructor
    Vector() : x(0), y(0), z(0) {}

    // Vector sum
    Vector sum(const Vector& b) const {
        Vector result;
        result.x = x + b.x;
        result.y = y + b.y;
        result.z = z + b.z;

        return result;
    }

    // Same as above, but defined as the overloading of operator "+"
    // Vector sum out of place
    Vector operator +(const Vector& b) const {
        return Vector(x + b.x, y + b.y,z + b.z);
    }

    // overloading of the binary "-" operator: 
    // Vector difference
    Vector operator -(const Vector& b) const {
        return Vector(x - b.x, y - b.y,z - b.z);
    }

    // overloading of the uniary "-" operator: 
	// Vector flip
    Vector operator -() const {
        return Vector(-x, -y, -z);
    }
};

int main() {
    Vector a(5, 3, -6);
    Vector b(1, 1, 1);
    Vector c(6, -3, 5.0);
    // Vector t = v.sum(w);
    Vector d = a + b - c;

    d = -a;

    d.print();

    return 0;
}