Which of the following is not true for overloaded functions C++?

Correct answer: The statement "Overloaded functions having the same argument lists should have a different return type." is not true.

Explanation:

• Function overloading is determined by the function signature, which includes the function name and the parameter list (number of parameters, types, and their order).

• The return type is not part of the signature used for overload resolution, so you cannot overload solely by changing the return type. Example of an invalid pair: int func(int); and double func(int); — this is a redefinition error because the parameter lists are identical.

• The static specifier is not part of the function signature either, so you cannot overload only by making one function static and the other non-static.

• Note: const qualification for member functions is part of the signature and can be used to overload member functions (for example, void f(); and void f() const; are distinct).

• Therefore, the incorrect statement is the one claiming return-type-only overloading is allowed; the correct rule is that overloaded functions must differ in their parameter lists.