Which of the following is not a reserved keyword in C++?

readable mutable default volatile

Constant variables can be created in C++ by using ________ .

All of the mentioned enum const #define

Which among following is not a valid visibility mode in C++ program ?

Limited Protected Public Private

Constructor is executed when _____.

an object is created an object is used a class is declared an object goes out of scope.

Why reference is not same as a pointer?

All of the mentioned A reference can never be null. Reference doesn't need an explicit dereferencing mechanism. A reference once established cannot be changed.