OOP Constant Member Functions Quiz Online Practice Test

1. What defines constant member functions?

Functions that do not alter the state of the calling object

Functions that do not modify any object within their definition

Functions that prevent any modification of class objects

Functions that prevent modification of their argument objects

2. Which keyword is used to declare a member function as a constant member function?

constant

const

FunctionConst

unchanged

3. Which type of objects can invoke const member functions?

Only const objects

Only non-const objects

Both const and non-const objects

Neither const nor non-const objects

4. Non-const functions ___________.

Can be called exclusively from non-const objects

Can be called exclusively from const objects

Can be called from both const and non-const objects

Cannot be called with any object

5. What is the accurate condition for const member functions?

Const member functions cannot call non-const member functions

Const member functions are prohibited from calling any other functions

Const member functions can only call functions that are neither const nor non-const

Const member functions can call only data members, not other member functions

6. When a const object invokes a non-const member function, ____________.

A runtime error may occur

A compile-time error may occur

Either a compile-time or runtime error may occur

The program will fail to compile

7. Is it possible for a constructor function to be constant?

Yes, always

Yes, but only if specific permissions are granted

No, because constructors do not involve objects

No, it is never possible

8. How can you have both const and non-const versions of a function?

Function overriding

Function prototyping

Function overloading

Function declaration

9. In what scenario are both const and non-const versions of a function needed?

The return values must differ for const versions

The return values must be identical for const versions

Return values must be disregarded

Return values must be suppressed

10. To declare a function as const, which syntax is correct?

const functionName(parameters);

const returnType functionName(parameters);

const functionName(returnType)(parameters);

const (functionName(parameters));

11. Functions that vary in const-ness are considered ___________.

To have the same signature

To have different signatures

To produce a compile-time error

To produce a runtime error

12. When overloading functions, if a const version is used, the function _____________.

Returns a reference to the object

Returns a volatile reference

Returns a mutable reference

Returns a const reference

13. Which approach is recommended for using const functions in a program?

Minimize the use of const functions

Increase the use of const functions

The use of const functions should be irrelevant

Const functions should be designed to modify values

14. In a program, employing const member functions _____________.

Is always required

Is always discretionary

Is essential when working with objects

Is optional when handling const objects

Test Name:	OOP Constant Member Functions Quiz
Subject Category:	Computer Science
Test Type:	Multiple Choice Questions
Total Score / Questions:	14 / 14
Time Allowed:	10 Min
Who Should Practice this Test:	Students, job seekers, or professionals preparing for competitive exams and interviews.

OOP Constant Member Functions MCQ Quiz Online Practice Test