Overloading Post decrementing operator by using member functions

Overloading Post decrementing operator by using member functions:

If d1,d2 are objects of class ‘Distance’  then the following statement

d2= d1- -;

is interpretated by the compiler as

d2= d1.operator - - (0);

Example :

class Distance

{

private:

int feet;

float inches;

public:

Distance operator -- (int); // prototype for overloading the post decrement operator

/*

    rest of the class

*/

};

Distance Distance :: operator --(int)

{

return distance (feet--, inches--);

}

void main( )

{

Distance d1,d2;

d2= d1--;

}

friend function

operator overloading

Over loading increement and decreement operators: