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MCQOPTIONS
This section includes 839 Mcqs, each offering curated multiple-choice questions to sharpen your C++ Programming knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
Which function is used to write a single character to console in C++? |
| A. | cout.put(ch) |
| B. | cout.putline(ch) |
| C. | write(ch) |
| D. | printf(ch) |
| Answer» B. cout.putline(ch) | |
| 802. |
Which of the following is used for comments in C++? |
| A. | // comment |
| B. | /* comment */ |
| C. | both // comment or /* comment */ |
| D. | // comment */ |
| Answer» D. // comment */ | |
| 803. |
What are the formal parameters in C++? |
| A. | Parameters with which functions are called |
| B. | Parameters which are used in the definition of the function |
| C. | Variables other than passed parameters in a function |
| D. | Variables that are never used in the function |
| Answer» C. Variables other than passed parameters in a function | |
| 804. |
What are the actual parameters in C++? |
| A. | Parameters with which functions are called |
| B. | Parameters which are used in the definition of a function |
| C. | Variables other than passed parameters in a function |
| D. | Variables that are never used in the function |
| Answer» B. Parameters which are used in the definition of a function | |
| 805. |
Which of the following escape sequence represents carriage return? |
| A. | \r |
| B. | \n |
| C. | \n\r |
| D. | \c |
| Answer» B. \n | |
| 806. |
Which of the following is a correct identifier in C++? |
| A. | 7var_name |
| B. | 7VARNAME |
| C. | VAR_1234 |
| D. | $var_name |
| Answer» D. $var_name | |
| 807. |
Which of the following is called address operator? |
| A. | * |
| B. | & |
| C. | _ |
| D. | % |
| Answer» C. _ | |
| 808. |
Which of the following escape sequence represents tab? |
| A. | \t |
| B. | \t\r |
| C. | \b |
| D. | \a |
| Answer» B. \t\r | |
| 809. |
What are the escape sequences? |
| A. | Set of characters that convey special meaning in a program |
| B. | Set of characters that whose use are avoided in C++ programs |
| C. | Set of characters that are used in the name of the main function of the program |
| D. | Set of characters that are avoided in cout statements |
| Answer» B. Set of characters that whose use are avoided in C++ programs | |
| 810. |
Which function is used to read a single character from the console in C++? |
| A. | cin.get(ch) |
| B. | getline(ch) |
| C. | read(ch) |
| D. | scanf(ch) |
| Answer» B. getline(ch) | |
| 811. |
Which of the following is the correct syntax of including a user defined header files in C++? |
| A. | #include <userdefined.h> |
| B. | #include <userdefined> |
| C. | #include “userdefined” |
| D. | #include [userdefined] |
| Answer» D. #include [userdefined] | |
| 812. |
Out of the following, which is not a member of the class? |
| A. | Static function |
| B. | Friend function |
| C. | Constant function |
| D. | Virtual function |
| Answer» C. Constant function | |
| 813. |
Which of the following provides a programmer with the facility of using object of a class inside other classes? |
| A. | Inheritance |
| B. | Composition |
| C. | Abstraction |
| D. | Encapsulation |
| Answer» C. Abstraction | |
| 814. |
How many types of polymorphism are there in C++? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 815. |
Why references are different from pointers? |
| A. | A reference cannot be made null |
| B. | A reference cannot be changed once initialized |
| C. | No extra operator is needed for dereferencing of a reference |
| D. | All of the mentioned |
| Answer» E. | |
| 816. |
What is the other name used for functions inside a class? |
| A. | Member variables |
| B. | Member functions |
| C. | Class functions |
| D. | Class variables |
| Answer» C. Class functions | |
| 817. |
What does modularity mean? |
| A. | Hiding part of program |
| B. | Subdividing program into small independent parts |
| C. | Overriding parts of program |
| D. | Wrapping things into single unit |
| Answer» C. Overriding parts of program | |
| 818. |
Which of the following class allows to declare only one object of it? |
| A. | Abstract class |
| B. | Virtual class |
| C. | Singleton class |
| D. | Friend class |
| Answer» D. Friend class | |
| 819. |
How access specifiers in Class helps in Abstraction? |
| A. | They does not helps in any way |
| B. | They allows us to show only required things to outer world |
| C. | They help in keeping things together |
| D. | Abstraction concept is not used in classes |
| Answer» C. They help in keeping things together | |
| 820. |
Which of the following cannot be a friend? |
| A. | Function |
| B. | Class |
| C. | Object |
| D. | Operator function |
| Answer» D. Operator function | |
| 821. |
How structures and classes in C++ differ? |
| A. | Classes follows OOP concepts whereas structure does not |
| B. | In Structures, members are private by default whereas in Classes they are public by default |
| C. | Structures by default hide every member |
| D. | Classes and Structures are the same |
| Answer» B. In Structures, members are private by default whereas in Classes they are public by default | |
| 822. |
A language which has the capability to generate new data types are called ________________ |
| A. | Extensible |
| B. | Overloaded |
| C. | Encapsulated |
| D. | Reprehensible |
| Answer» B. Overloaded | |
| 823. |
Which of the following is called insertion/put to operator? |
| A. | << |
| B. | >> |
| C. | > |
| D. | < |
| Answer» B. >> | |
| 824. |
Who created C++? |
| A. | Bjarne Stroustrup |
| B. | Dennis Ritchie |
| C. | Ken Thompson |
| D. | Brian Kernighan |
| Answer» B. Dennis Ritchie | |
| 825. |
Which of the following shows multiple inheritances? |
| A. | A->B->C |
| B. | A->B; A->C |
| C. | A,B->C |
| D. | B->A |
| Answer» D. B->A | |
| 826. |
Wrapping data and its related functionality into a single entity is known as _____________ |
| A. | Abstraction |
| B. | Encapsulation |
| C. | Polymorphism |
| D. | Modularity |
| Answer» C. Polymorphism | |
| 827. |
What does polymorphism in OOPs mean? |
| A. | Concept of allowing overiding of functions |
| B. | Concept of hiding data |
| C. | Concept of keeping things in differnt modules/files |
| D. | Concept of wrapping things into a single unit |
| Answer» B. Concept of hiding data | |
| 828. |
Which concept allows you to reuse the written code? |
| A. | Encapsulation |
| B. | Abstraction |
| C. | Inheritance |
| D. | Polymorphism |
| Answer» D. Polymorphism | |
| 829. |
C++ is ______________ |
| A. | procedural programming language |
| B. | object oriented programming language |
| C. | functional programming language |
| D. | both procedural and object oriented programming language |
| Answer» E. | |
| 830. |
Which of the following is correct about static variables? |
| A. | Static functions do not support polymorphism |
| B. | Static data members cannot be accessed by non-static member functions |
| C. | Static data members functions can access only static data members |
| D. | Static data members functions can access both static and non-static data members |
| Answer» D. Static data members functions can access both static and non-static data members | |
| 831. |
Const qualifier can be applied to which of the following?i) Functions inside a classii) Arguments of a functioniii) Static data membersiv) Reference variables |
| A. | i, ii and iii |
| B. | i, ii, iii, and iv |
| C. | ii, iii and iv |
| D. | i only |
| Answer» C. ii, iii and iv | |
| 832. |
Which of the following operator(s) can be used with pointers?i) – onlyii) +, *iii) +, –iv) +, -, *v) /vi) + only |
| A. | i only |
| B. | vi only |
| C. | ii and v |
| D. | iv |
| Answer» B. vi only | |
| 833. |
What is the other name of run-time polymorphism? |
| A. | Static polymorphism |
| B. | Dynamic polymorphism |
| C. | Executing polymorphism |
| D. | Non-executing polymorphism |
| Answer» C. Executing polymorphism | |
| 834. |
Which of the following is correct about dynamic polymorphism? |
| A. | In dynamic polymorphism, the conflict between the function call is resolved during the compile time |
| B. | In dynamic polymorphism, the conflict between the function call is resolved during the run time |
| C. | In dynamic polymorphism, the conflict between the function call is never resolved during the execution of program |
| D. | In dynamic polymorphism, the conflict between the function call is resolved at the beginning of the program |
| Answer» C. In dynamic polymorphism, the conflict between the function call is never resolved during the execution of program | |
| 835. |
What is the other name of compile-time polymorphism? |
| A. | Static polymorphism |
| B. | Dynamic polymorphism |
| C. | Executing polymorphism |
| D. | Non-executing polymorphism |
| Answer» B. Dynamic polymorphism | |
| 836. |
What is std in C++? |
| A. | std is a standard class in C++ |
| B. | std is a standard namespace in C++ |
| C. | std is a standard header file in C++ |
| D. | std is a standard file reading header in C++ |
| Answer» C. std is a standard header file in C++ | |
| 837. |
How many types of polymorphism are there? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 838. |
Which of the following syntax can be used to use a member of a namespace without including that namespace? |
| A. | namespace::member |
| B. | namespace->member |
| C. | namespace.member |
| D. | namespace~member |
| Answer» B. namespace->member | |
| 839. |
Which of the following is correct about static polymorphism? |
| A. | In static polymorphism, the conflict between the function call is resolved during the compile time |
| B. | In static polymorphism, the conflict between the function call is resolved during the run time |
| C. | In static polymorphism, the conflict between the function call is never resolved during the execution of a program |
| D. | In static polymorphism, the conflict between the function call is resolved only if it required |
| Answer» B. In static polymorphism, the conflict between the function call is resolved during the run time | |