// erer.cpp: определяет точку входа для консольного приложения.
//

#include "stdafx.h"

#include <iostream>

using namespace std;


struct Vector {
    double x, y, z;
};

Vector makeNewVector(double x, double y, double z)
{
    Vector res;
    res.x = x;
    res.y = y;
    res.z = z;
    return res;
}

Vector operator+(Vector a, Vector b)
{
    Vector res;
    res.x = a.x + b.x;
    res.y = a.y + b.y;
    res.z = a.z + b.z;
    return res;
}

Vector operator*(double c, Vector b)
{
    Vector res;
    res.x = c*b.x;
    res.y = c*b.y;
    res.z = c*b.z;
    return res;
}

Vector operator-(Vector a, Vector b)
{
    Vector res;
    res.x = a.x - b.x;
    res.y = a.y - b.y;
    res.z = a.z - b.z;
    return res;
}

return 0;
}

int _tmain(int argc, _TCHAR* argv[])
{

    Vector a = makeNewVector(3, 4, 5),
       b = makeNewVector(1, 2, 4);
       c = 5;

cout << "a = " << a << endl;
cout << "b = " << b << endl;

Vector res = a + b;
cout << a << " + " << b << " = " << res << endl;

Vector res = c * b;
cout << c << " * " << b << " = " << res << endl;

Vector res = a - b;
cout << a << " - " << b << " = " << res << endl;

}

return 0;
}