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 /* j_3_p_2
Create a Class Space that has x, y, z as data members and function to accept and display
the data member. Overload unary – operator to convert sign of the data member. (Through
member function & friend function)
*/
#include <iostream.h>
#include <conio.h>

class space
{
    int x, y, z;
    public:
        void get()
        {
            cout << "Enter value x = ";
            cin >> x;

            cout << "Enter value y = ";
            cin >> y;

            cout << "Enter value z = ";
            cin >> z;
        }
        void put()
        {
            cout << "\tx = " << x << endl;
            cout << "\ty = " << y << endl;
            cout << "\tz = " << z << endl;
        }
           /*    void operator-()
        {
            x = -x;
            y = -y;
            z = -z;
        } */
        friend void operator-(space &ref)
};
void operator-(space &ref)
{
            ref.x = -ref.x;
            ref.y = -ref.y;
            ref.z = -ref.z;

}
void main()
{
    clrscr();
    space obj1, obj2;

    obj1.get();
    -obj1;
    obj1.put();
    getch();
}

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