How to overload the postfix and prefix increment operators in C++?

The prefix and postfix increment operators ++ in C++ are overloaded with two different member function signatures:

• Prefix increment: Returns a reference to the current object (*this) after modifying it.

  ClassName& operator++() {
      // Prefix increment logic
      // Change the object's state
  
      return *this; // Return a reference to the modified object
  }
  

• Postfix increment: Returns a copy of the object before modification. It differs by having a dummy parameter int.

  ClassName operator++(int) {
      ClassName temp = *this; // Save the current state
  
      // Postfix increment logic
      // Change the object's state
  
      return temp; // Return the saved copy
  }
  

Increment type	Function signature	Return value	Parameters
Prefix	ClassName& operator++()	Reference to the modified object	None
Postfix	ClassName operator++(int)	Copy of the object before modification	Dummy int