C++ Language
MCQ questions and answers
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C++ Language MCQ (55)
1. |
What is the basic run time entity in an object-oriented system? |
| A | Class |
| B | Object |
| C | Library function |
| D | Polymorphism |
|
Answer: B |
|
2. |
__________ is also known as ADT. |
| A | Object |
| B | Inheritance |
| C | Class |
| D | int |
|
Answer: C |
|
3. |
Objects are the variable of the type __________. |
| A | class |
| B | int |
| C | float |
| D | pointer |
|
Answer: A |
|
4. |
Encapsulation means the wrapper around__________ and __________. |
| A | function, variable |
| B | variable, operator |
| C | function, data |
| D | class, object |
|
Answer: C |
|
5. |
The act of representing an essential features with an including the background details or explanation is called __________. |
| A | Object |
| B | Encapsulation |
| C | Polymorphism |
| D | Abstraction |
|
Answer: D |
|
6. |
Which concept provides the code reusability feature? |
| A | Polymorphism |
| B | Inheritance |
| C | Encapsulation |
| D | Class |
|
Answer: B |
|
7. |
The object of a one-class can acquire the properties of another class is known as__________. |
| A | inheritance |
| B | abstraction |
| C | dynamic binding |
| D | polymorphism |
|
Answer: A |
|
8. |
__________ perform the different operations in the different circumstances are called as operator overloading. |
| A | Variable |
| B | Token |
| C | Operator |
| D | Object |
|
Answer: C |
|
9. |
____ binding is also known as late binding. |
| A | super binding |
| B | static binding |
| C | compile-time binding |
| D | Run-time binding |
|
Answer: D |
|
10. |
The communication between the objects of a class is known as ______ |
| A | compile time binding |
| B | run time binding |
| C | message passing |
| D | call by reference |
|
Answer: C |
|
11. |
Which of the following is a insertion operator? |
| A | >> |
| B | << |
| C | :: |
| D | : |
|
Answer: B |
|
12. |
What is the default return type of a main() function? |
| A | int |
| B | void |
| C | float |
| D | char |
|
Answer: A |
|
13. |
The main() function always return a value to the __________. |
| A | program |
| B | compiler |
| C | interpretter |
| D | operating system |
|
Answer: D |
|
14. |
Which operator is also known as an extraction operator or get from the operator? |
| A | << |
| B | >> |
| C | [ ] |
| D | :: |
|
Answer: B |
|
15. |
Which is the smallest individual unit in the program? |
| A | Identifier |
| B | Constant |
| C | Token |
| D | Varibale |
|
Answer: C |
|
16. |
Which operator is used to create an object? |
| A | create |
| B | new |
| C | :: |
| D | malloc() |
|
Answer: B |
|
17. |
Which of the following loop statement is known as an exit controlled loop? |
| A | for loop |
| B | while loop |
| C | goto |
| D | do-while loop |
|
Answer: D |
|
18. |
Which loop is known as an entry controlled loop? |
| A | for loop |
| B | while loop |
| C | A and B |
| D | do-while loop |
|
Answer: C |
|
19. |
Which datatype is used to declared the generic pointer? |
| A | long |
| B | double |
| C | new |
| D | void |
|
Answer: D |
|
20. |
In which function, the compiler replace the function call with the corresponding function code? |
| A | friend function |
| B | inline function |
| C | malloc() |
| D | calloc() |
|
Answer: B |
|
21. |
__________ function allows the program run faster due to the overhead of the function call and return statement has eliminated. |
| A | inline |
| B | friend |
| C | reference |
| D | virtual |
|
Answer: A |
|
22. |
A member declared as __________ is accessible by the member function within the class and other class which is declared by it. |
| A | private |
| B | protected |
| C | public |
| D | none |
|
Answer: B |
|
23. |
The object can be created by _______ class. |
| A | Interface |
| B | Abstract |
| C | All of the above |
| D | None of the above |
|
Answer: B |
|
24. |
A __________ member of class can not be inherited either in public mode or in private mode. |
| A | public |
| B | protected |
| C | private |
| D | None |
|
Answer: C |
|
25. |
Which of the following operator is used to inherit the parent class to the child class? |
| A | >> |
| B | << |
| C | ?: |
| D | :: |
|
Answer: D |
|
26. |
____ keyword can directly access the private and protected data of the class? |
| A | virtual |
| B | friend |
| C | inline |
| D | none |
|
Answer: B |
|
27. |
A class can inherit the properties from more than one base class which is known as __________. |
| A | single level inheritance |
| B | multilevel inheritance |
| C | multiple inheritance |
| D | hybrid inheritance |
|
Answer: C |
|
28. |
Pointer is a __________ datatype. |
| A | basic |
| B | derived |
| C | empty |
| D | primary |
|
Answer: B |
|
29. |
Which keyword is used to represent the current object? |
| A | new |
| B | setw |
| C | this |
| D | super |
|
Answer: C |
|
30. |
A ________ function is a special form of member function that is declared within a base class and redefined by a derived class |
| A | member |
| B | calling |
| C | virtual |
| D | static |
|
Answer: C |
|
31. |
______ virtual function is a virtual function in C++ for which we need not to write any function definition and only we have to declare it |
| A | basic |
| B | pure |
| C | static |
| D | this |
|
Answer: B |
|
32. |
__________ is a sequence of bytes. |
| A | Array |
| B | Pointer |
| C | String |
| D | Stream |
|
Answer: D |
|
33. |
Which source stream provides the data to the program is called __________. |
| A | input stream |
| B | output stream |
| C | pipe |
| D | stream |
|
Answer: A |
|
34. |
The destination stream that receive __________ from the program is called output stream. |
| A | input |
| B | data |
| C | stream |
| D | output |
|
Answer: D |
|
35. |
Which operator is overloaded in the istream class? |
| A | << |
| B | >> |
| C | :: |
| D | ?: |
| Answer: B | |
36. |
The << operator is overloaded in the__________ class as an insertion operator. |
| A | Ostream |
| B | istream |
| C | FileData |
| D | Character |
| Answer: A | |
37. |
_______ member function(s) is/are included into the ios class? |
| A | width() |
| B | fill() |
| C | setf() |
| D | all of the above |
|
Answer: D |
|
38. |
Which header file provides a set of manipulator functions to use the output format? |
| A | stdio.h |
| B | iostream.h |
| C | conio.h |
| D | iomanip.h |
|
Answer: D |
|
39. |
Which function is used to fill the unused portion of the field in a console I/O operations? |
| A | fill() |
| B | setf() |
| C | unsafe() |
| D | setData() |
|
Answer: A |
|
40. |
Which function is used in the console I/O operation to clear the flag? |
| A | clear() |
| B | unsetf() |
| C | unset() |
| D | flush() |
|
Answer: B |
|
41. |
_____ function is used to read a whole line of text which ends with a newline character? |
| A | getc() |
| B | gets() |
| C | getline() |
| D | cin |
|
Answer: C |
|
42. |
__________ is a collection of related data which is stored in a particular area of the disk. |
| A | file |
| B | array |
| C | stack |
| D | heap |
|
Answer: A |
|
43. |
Which function is used to move the GET pointer to the specified location? |
| A | seekg() |
| B | seekp() |
| C | tellg() |
| D | tellp() |
|
Answer: A |
|
44. |
Which function is used to move the PUT pointer (output) to the specified location? |
| A | tellg() |
| B | seekg() |
| C | tellp() |
| D | seekp() |
|
Answer: D |
|
45. |
tellg() function gives the __________ position of the GET pointer. |
| A | last of the line |
| B | end of the line |
| C | current |
| D | first of the line |
|
Answer: C |
|
46. |
Which function is use to get the current position of the PUT pointer? |
| A | seek |
| B | seekg() |
| C | tellg() |
| D | tellp() |
|
Answer: D |
|
47. |
In the C++, the I/O system contains the classes like ifstream, ofstream, and fstream to deal with file handling operations, these classes are derived from the __________ classes. |
| A | stream |
| B | fstreamcore |
| C | fstreambase |
| D | iostream |
|
Answer: C |
|
48. |
The pure virtual function is also known as _____ |
| A | friend function |
| B | abstract function |
| C | final function |
| D | inline function |
|
Answer: B |
|
49. |
Which mechanism is used to implement the generic programming? |
| A | template |
| B | file |
| C | stream |
| D | pointer |
|
Answer: A |
|
50. |
A specific class created from the template class is known as __________. |
| A | base class |
| B | manipulator |
| C | template class |
| D | containership |
|
Answer: C |
|
51. |
The function generate from the function template is called __________. |
| A | static function |
| B | formal function |
| C | member function |
| D | template function |
|
Answer: D |
|
52. |
__________ is a peculiar problem which may occur at a runtime. |
| A | Error |
| B | Exception |
| C | Algorithm |
| D | Throw |
|
Answer: B |
|
53. |
____ block is used to write the error prone code. |
| A | catch block |
| B | throw |
| C | main |
| D | try block |
|
Answer: D |
|
54. |
STL stand for |
| A | Standard Template Library |
| B | Simple Template Library |
| C | Standard Test Library |
| D | Standard Template List |
|
Answer: A |
|
55. |
__________ pointer is a generic pointer which can be represented by any type of pointer. |
| A | int |
| B | void |
| C | array |
| D | struct |
| Answer: B |
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