Programming Languages MCQS-SET 02

The address of a variable temp of type float is

(A) *temp                                           (B) &temp

(C) float& temp                                 (D) float temp&

Ans: B

The process of building new classes from existing one is called                            .

(A) Polymorphism                             (B)Structure

(C) Inheritance                                 (D) Cascading

Ans: C

Usually a pure virtual function

(A) has complete function body.

(B)  will never be called.

(C) will be called only to delete an object.

(D) is defined only in derived class.

Ans: D

Overloading the function operator

(A) requires a class with an overloaded operator.

(B) requires a class with an overloaded [ ] operator.

(C) allows you to create objects that act syntactically like functions.

(D) usually make use of a constructor that takes arguments.

Ans: A

In C++, the range of signed integer type variable is                                         

(A) 0 to 216             (C) − 27 to 27 − 1   (B) − 215  to 215  − 1  (D) 0 to 28

Ans: B

Mechanism of deriving a class from another derived class is known as                                               

(A) Polymorphism                             (B) Single Inheritance

(C) Multilevel Inheritance                 (D) Message Passing

Ans: C

RunTime Polymorphism is achieved by                                         

(A) friend function                            (B) virtual function

(C) operator overloading                   (D) function overloading

Ans: B

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