Steve Robinson

//++ and -- Operator overloading
#include <iostream.h>
#include <process.h>

class clock
{
    int hours, min;
    public:
        clock(int th, int tm)
        {
            hours=th;
            min=tm;
        }
        void display()
        {
            cout<<"\nThe time is "<<hours<<":"<<min;
        }
        void operator ++() //prefix ovrldng
        {
            hours++;
        }
        void operator ++(int temp) //postfix
        {
            min++;
        }
        void operator --() //prefix
        {
            hours--;
        }
        void operator --(int temp)//postfix
        {
            min--;
        }
};

int main()
{
    clock c(12,0);
    int ch;
    menu:
    c.display();
    cout<<"\nMenu:\n1. Advance time by 1 hour\n2. Advance time by 1 minute\n3. Reduce time by 1 hour\n4. Reduce time by 1 minute\n5. Exit\nEnter choice...";
    cin>>ch;
    switch(ch)
    {
        case 1:
            ++c;
            break;
        case 2:
            c++;
            break;
        case 3:
            --c;
            break;
        case 4:
            c++;
            break;
        case 5:
            exit(0);
        default:
            cout<<"\nInvalid Choice!";
            goto menu;
    }
    goto menu;
}