//OverLoading Unary Minus c++

#include"iostream.h"
class space
{
int x;
int y;
int z;
public:
void getdata(int a, int b, int c);
void display(void);
void operator-(); //overloaded unary minus
};

void space::getdata(int a, int b, int c)
{
x=a;
y=b;
z=c;
}
void space::display(void)
{
cout< cout< cout<}
void space:: operator-()
{
x=-x;
y=-y;
z=-z;
}
int main()
{
space S;
S.getdata(10,-20, 30);
cout<<"S:";
S.display();
-S; //activates operator-() function

cout<<"S:";
S.display();
return 0;
}