262.cpp

#include <iostream>
using namespace std;
class space
{
    public:
    int x;
    int y;
    int z;

public:
    void getdata(int a, int b, int c);
    void display(void);
    void operator-(space &s);
};
void space::getdata(int a, int b, int c)
{
    x = a;
    y = b;
    z = c;
}
void space::display(void)
{
    cout << x << endl;
    cout << y << endl;
    cout << z << endl;
}
void operator-(space &s)
{
    s.x = -s.x;
    s.y = -s.y;
    s.z = -s.z;
}
int main()
{
    space s;
    s.getdata(10, -20, 30);
    cout << "S : " << endl;
    s.display();
    -s;
    cout << "S :" << endl;
    s.display();
    return 0;
}