Unary Operators

Unary operators are normally implemented as member functions.
- The operator is invoked by the operand.
- The expression *a is equivalent to a.operator*()

Pre-increment and Pre-decrement Operators

Form:

    Type& Type::operator++()
    {
    //  Increment the object...

        return *this;
    }

Post-increment and Post-decrement Operators

Both return the object by value.
Include one unused int parameter to distinguish the post- from the pre- operators.

Form:

    Type Type::operator++(int)
    {
        Type original = *this;

    //  Increment the object...

        return original;
    }

This page was last modified on Feb 1, 2001

URL: http://people.hsc.edu/faculty-staff/robbk/Coms262/Lectures/UnaryOperators.html