C++ Programming

[A]. By making all member functions constant.
[B]. By making at least one member function as pure virtual function.[C]. By declaring it abstract using the static keyword.
[D]. By declaring it abstract using the virtual keyword.

Answer: Option B

[A]. Public members of the base class become protected members of derived class.
[B]. Public members of the base class become private members of derived class.[C]. Private members of the base class become private members of derived class.
[D]. Public members of the base class become public members of derived class.

Answer: Option B

[A]. Member function and data are by default protected in structures but private in classes.
[B]. Member function and data are by default private in structures but public in classes.[C]. Member function and data are by default public in structures but private in classes.
[D]. Member function and data are by default public in structures but protected in classes.

Answer: Option C

 

[A]. Object
[B]. Functions[C]. Operators
[D]. Both B and C

Answer: Option D

[A]. Public members of the base class become protected members of derived class.
[B]. Public members of the base class become private members of derived class.[C]. Private members of the base class become protected members of derived class.
[D]. Public members of the base class become public members of derived class.

Answer: Option D

[A]. Destructors can take arguments but constructors cannot.
[B]. Constructors can take arguments but destructors cannot.[C]. Destructors can be overloaded but constructors cannot be overloaded.
[D]. Constructors and destructors can both return a value.

Answer: Option B

[A]. an object is created
[B]. an object is used[C]. a class is declared
[D]. an object goes out of scope.

Answer: Option A

[A]. Data items in a class must be private.
[B]. Both data and functions can be either private or public.[C]. Member functions of a class must be private.
[D]. Constructor of a class cannot be private.

Answer: Option B

[A]. Friend keyword can be used in the class to allow access to another class.
[B]. Friend keyword can be used for a function in the public section of a class.[C]. Friend keyword can be used for a function in the private section of a class.
[D]. Friend keyword can be used on main().

Answer: Option D

1. It can access only other static members of its class.
2. It can be called using the class name, instead of objects.

[A]. Only 1 is correct.
[B]. Only 2 is correct.[C]. Both 1 and 2 are correct.
[D]. Both 1 and 2 are incorrect.

Answer: Option C