Overloading the Pre Increementing operator through a member function

Overloading the Pre Increementing operator through a member function:

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

d2= ++d1;

is interpretated by the compiler as

d2= d1.operator ++ ();

Example :

class Distance

{

private:

int feet;

float inches;

public:

Distance operator ++ ();  // prototype for overloading the pre increment operator

/*

    rest of the class

*/

};

Distance Distance :: operator ++ ( )

{

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

}

void main( )

{

Distance d1,d2;

d2= ++d1;

cout<<d2.feet<< endl <<de.inches;

}

Over loading increement and decreement operators: 

operator overloading