//sisaldab ka ülesannnet 3-1

#include <iostream>
using namespace std;

class TThreeD
{
  private:
     int x;
     int y;
     int z;
  public:
     TThreeD(void){ x=y=z=0; }
     TThreeD( int _x, int _y, int _z){ x=_x, y=_y; z=_z; }
     TThreeD operator+(TThreeD op2); // Operator op1 is the object itself
     TThreeD operator=(TThreeD op2); // Operator op1 is the object itself
     TThreeD operator++();
     TThreeD operator--();
     TThreeD operator++(int notused);
     TThreeD operator--(int notused);
     void Show(void);
};

// Prefix operator ++
TThreeD TThreeD::operator++()
{
     x++;
     y++;
     z++;

     return *this;
}

// Overload ++ postfix version
TThreeD TThreeD::operator++(int notused)
{
     TThreeD Tmp = *this;

     x++;
     y++;
     z++;

     return Tmp;     
}

//Prefix operator --
TThreeD TThreeD::operator--()
{
	x--;
	y--;
	z--;

	return *this;
}

// Overload -- postfix version
TThreeD TThreeD::operator--(int notused)
{
     TThreeD Tmp = *this;

     x--;
     y--;
     z--;

     return Tmp;     
}

// Overloading +
TThreeD TThreeD::operator+(TThreeD op2)
{
     TThreeD Tmp;

     Tmp.x = x + op2.x;
     Tmp.y = y + op2.y;
     Tmp.z = z + op2.z;

     return Tmp;
}

// Overloading =
TThreeD TThreeD::operator=(TThreeD op2)
{
     x = op2.x;
     y = op2.y;
     z = op2.z;

     return *this;
}

// Member function Show()
void TThreeD::Show(void)
{
     cout << "Coordinates: ";
     cout << x << ", ";
     cout << y << ", ";
     cout << z << endl;
}

int main(void)
{
     TThreeD A(10, 20, 30);
     TThreeD B(10, -10, 10);
     TThreeD C;

     cout<<"Teen nüüd C=A+B; "<<endl;
     C=A+B;
     C.Show();
     cout<<"Teen nüüd C=A+B+C; "<<endl;
     C=A+B+C;
     C.Show();
     cout<<"Teen nüüd C=A=B; "<<endl;
     C=B=A;
     C.Show();
     B.Show();
     A.Show();
     cout<<"Teen nüüd ++A; "<<endl;
     ++A;
     A.Show();
     cout<<"Teen nüüd A++.Show(); "<<endl;
     A++.Show();
     cout<<"A.Show(); see the difference ?  "<<endl;
     A.Show();
     cout<<"Teen nüüd --A; "<<endl;
     --A;
     A.Show();
     cout<<"Teen nüüd A--.Show(); "<<endl;
     A--.Show();
     cout<<"Teen nüüd A.Show(); get it? "<<endl;
     A.Show();
     return 0;
}