Chapter 1, Problem 11E

Program Plan Intro

Operator Overloading:

• Operator overloading denotes a special case in which some operators like “=”, “+” or “==” are been treated as polymorphic functions.
• The polymorphic function denotes the characteristic of applying a different meaning for anything in a different context.
• Entities such as a function, an object or a variable are allowed to exist in more than one form.
• Based on the argument types, the operators would have different behaviors.
• For overloading an operator, a new meaning is been provided to user defined types.

Syntax:

return_type operator@(list_of_arguments)

{

  //definitions

}

Points to be noted while operator overloading

• All operators cannot be overloaded
• New operators could not be created.
• Precedence or associativity of operators could not be changed
• Most of the operator overloading can be performed as either a non-member function or member function.
• Operators are overloaded only when their usage is natural and unambiguous.