overloading.cpp

#include <iostream>
using namespace std;
class Time
{
private:
int hours; // 0 to 23
int minutes; // 0 to 59
public:
// required constructors
Time(){
hours = 0;
minutes = 0;
}
Time(int h, int m)
{
hours = h;
minutes = m;
}
// method to display time
void displayTime()
{
cout << "H: " << hours << " M:" << minutes <<endl;
}
Time operator++ ()
{
++minutes; // increment this object
if(minutes >= 60)
{
++hours;
minutes -= 60;
}
return Time(hours, minutes);
}
// overloaded postfix ++ operator
Time operator++( int )
{
// save the orignal value
Time T(hours, minutes);
// increment this object
++minutes;
if(minutes >= 60)
{
++hours;
minutes -= 60;
}
// return old original value
return T;
}
};
int main()
{
Time T1(11, 59), T2(10,40);
++T1; // increment T1
T1.displayTime(); // display T1
++T1; // increment T1 again
T1.displayTime(); // display T1

T2++; // increment T2
T2.displayTime(); // display T2
T2++; // increment T2 again
T2.displayTime(); // display T2
return 0;
}