In nested try blocks, if both inner and outer catch handlers are not able to handle the exception, then ______________ .

Compiler executes only executable statements of main().

Compiler issues compile time errors about it.

Program will be executed without any interrupt.

Program will be terminated abnormally.

In nested try block, if inner catch handler gets executed, then _____________ .

Program execution stops immediately.

Outer catch handler will also get executed.

Compiler will jump to the outer catch handler and then executes remaining executable statements of main().

Compiler will execute remaining executable statements of outer try block and then the main().

In Multipath inheritance, in order to remove duplicate set of records in child class, we ___________ .

Write Virtual function in parent classes

Write virtual functions is base class

Make base class as virtual base class

In case of inheritance where both base and derived class are having constructors, when an object of derived class is created then___________ .

constructor of derived class will be invoked first

constructor of base class will be invoked first

constructor of derived class will be executed first followed by base class

constructor of base class will be executed first followed by derived class

In case of binary operator overloading with member function, which of following statement should be taken into consideration?

Both the operands must be objects.

Right hand operand must be object.

Left hand operand must be object.

Both the operands must be objects.

All of these should be considered.

In a program, If there exists a function template with two parameters and normal function say void add(int , int), so add(3,4) will _____________________ .

Not be called and Compiler issues warning

Invoke function template body as it is generic one

Invokes normal function as it exactly matches with its prototype

Not be called and Compiler issues warning

Not be called and Compiler issues ambiguity in calling add()

If we have object from fstream class, then what is the default mode of opening the file?

Default mode depends on compiler

If inner catch handler is not able to handle the exception then__________ .

Compiler will look for outer try handler

Compiler will check for appropriate catch handler of outer try block

If default constructor is not defined, then how the objects of the class will be created?

The compiler will generate error

Compiler provides its default constructor to build the object.

If an argument to a function is declared as const, then _______ .

const argument to a function is not possible.

function can modify the argument.

Function can’t modify the argument.

const argument to a function is not possible.

If abstract class is inherited by derived class, then_______________ .

Derived class should provide definition for all the pure virtual functions

Derived class also become abstract if fails to implement pure virtual functions

Objects of derived class can’t be created if it fails to implement pure virtual functions

How can we restrict a function to throw certain exceptions?

It is not possible in CPP to restrict a function

Defining multiple try and catch block inside a function

Defining generic function within try block

Defining function with throw clause

It is not possible in CPP to restrict a function

Find the wrong statement/s about Abstract Class.

It contains at least one pure virtual function.

We can’t create pointers to an abstract class.

It contains at least one pure virtual function.

We can create references to an abstract class.

134 + Mcqs in C++ Programming Questions in Computer Science Page 2 McqOptions

51.	Object oriented programming employs_________ programming approach.
A.	top-down
B.	procedural
C.	bottom-up
D.	all of these.
Answer» D. all of these.

Discussion

52.	Object based language differs from object oriented language as it does not support features _____ . 1. Encapsulation 2. Inheritance 3. Dynamic Binding 4. Abstraction 5. Polymorphism
A.	only 3 ,4
B.	only 1,3,5
C.	2,4,5
D.	Only 2,3
Answer» E.

Discussion

53.	Members of the class can be declared with auto, extern or register storage classes.
A.	True
B.	False
Answer» C.

Discussion

54.	Logical expressions produce ____________ type results.
A.	explicit
B.	garbage
C.	bool
D.	static
Answer» D. static

Discussion

55.	__________________ is the OOP feature and mechanism that binds together code and the data it manipulates, and keep both safe from outside world.
A.	Data Binding
B.	Data Encapsulation
C.	Data Storing
D.	Data Abstraction
Answer» C. Data Storing

Discussion

56.	__________ is return type of is_open() function.
A.	int
B.	bool
C.	float
D.	char *
Answer» C. float

Discussion

57.	Is it possible to define a constructor with default arguments?
A.	Yes
B.	No
Answer» B. No

Discussion

58.	Is it mandatory to invoke/call a constructor for creating an object?
A.	Yes
B.	No
Answer» B. No

Discussion

59.	_______________ is a member function that is declared within a base class and redefined by derived class.
A.	virtual function
B.	static function
C.	friend function
D.	const member function
Answer» B. static function

Discussion

60.	Irrespective of exception occurrence, catch handler will always get executed.
A.	True
B.	False
Answer» C.

Discussion

61.	Inline functions may not work ______ . 1. If function contain static variables. 2. If function contain global and register variables. 3. If function returning value consists looping construct(i.e. for, while). 4. If inline functions are recursive. 5. If function contains const value.
A.	Only 1,4,5
B.	Only 2,3,5
C.	Only 1,3,4
D.	All of these
Answer» D. All of these

Discussion

62.	In nested try blocks, there is no need to specify catch handler for inner try block. Outer catch handler is sufficient for the program.
A.	True
B.	False
Answer» C.

Discussion

63.	In nested try blocks, if both inner and outer catch handlers are not able to handle the exception, then ______________ .
A.	Compiler executes only executable statements of main().
B.	Compiler issues compile time errors about it.
C.	Program will be executed without any interrupt.
D.	Program will be terminated abnormally.
Answer» E.

Discussion

64.	In nested try block, if inner catch handler gets executed, then _____________ .
A.	Program execution stops immediately.
B.	Outer catch handler will also get executed.
C.	Compiler will jump to the outer catch handler and then executes remaining executable statements of main().
D.	Compiler will execute remaining executable statements of outer try block and then the main().
Answer» E.

Discussion

65.	In Multipath inheritance, in order to remove duplicate set of records in child class, we ___________ .
A.	Write Virtual function in parent classes
B.	Write virtual functions is base class
C.	Make base class as virtual base class
D.	All of these
Answer» D. All of these

Discussion

66.	In CPP program, Can we declare and define a user defined function inside a struct as we do in a class ?
A.	Yes
B.	No
C.	Can’t say
Answer» B. No

Discussion

67.	In CPP, the size of the character array should be one larger than the number of characters in the string.
A.	True
B.	False
Answer» B. False

Discussion

68.	In CPP, it is mandatory and must to initialize const variables.
A.	True
B.	False
Answer» B. False

Discussion

69.	In CPP, dynamic memory allocation is done using ______________ operator.
A.	calloc()
B.	malloc()
C.	allocate
D.	New
Answer» E.

Discussion

70.	In CPP, cin and cout are the predefined stream __________ .
A.	Operator
B.	Functions
C.	Objects
D.	Data types
Answer» D. Data types

Discussion

71.	In case of operator overloading, operator function must be ______ . 1. Static member functions 2. Non- static member functions 3. Friend Functions
A.	Only 2
B.	Only 1, 3
C.	Only 2 , 3
D.	All 1 , 2, 3
Answer» D. All 1 , 2, 3

Discussion

72.	In case of inheritance where both base and derived class are having constructor and destructor, then which if the following are true ? 1. Constructors are executed in their order of derivation 2. Constructors are executed in reverse order of derivation 3. Destructors are executed in their order of derivation 4. Destructors are executed in reverse order of derivation
A.	Only 2 ,4
B.	Only 1 , 3
C.	Only 1 , 4
D.	Only 2, 3
Answer» D. Only 2, 3

Discussion

73.	In case of inheritance where both base and derived class are having constructors, when an object of derived class is created then___________ .
A.	constructor of derived class will be invoked first
B.	constructor of base class will be invoked first
C.	constructor of derived class will be executed first followed by base class
D.	constructor of base class will be executed first followed by derived class
Answer» E.

Discussion

74.	In case of binary operator overloading with member function, which of following statement should be taken into consideration?
A.	Right hand operand must be object.
B.	Left hand operand must be object.
C.	Both the operands must be objects.
D.	All of these should be considered.
Answer» C. Both the operands must be objects.

Discussion

75.	In any ways, Non-member function cannot have access to the private data of the class.
A.	True
B.	False
Answer» C.

Discussion

76.	In a program, If there exists a function template with two parameters and normal function say void add(int , int), so add(3,4) will _____________________ .
A.	Invoke function template body as it is generic one
B.	Invokes normal function as it exactly matches with its prototype
C.	Not be called and Compiler issues warning
D.	Not be called and Compiler issues ambiguity in calling add()
Answer» C. Not be called and Compiler issues warning

Discussion

77.	If we have object from fstream class, then what is the default mode of opening the file?
A.	ios::in\|ios::out
B.	ios::in\|ios::out\|ios::trunc
C.	ios::in\|ios::trunc
D.	Default mode depends on compiler
Answer» E.

Discussion

78.	If we have object from ofstream class, then default mode of opening the file is _____ .
A.	ios::in
B.	ios::out
C.	ios::in\|ios::trunc
D.	ios::out\|ios::trunk
Answer» E.

Discussion

79.	If the derived class is struct, then default visibility mode is _______ .
A.	public
B.	protected
C.	private
D.	struct can’t inherit class
Answer» B. protected

Discussion

80.	If inner catch handler is not able to handle the exception then__________ .
A.	Compiler will look for outer try handler
B.	Program terminates abnormally
C.	Compiler will check for appropriate catch handler of outer try block
D.	None of these
Answer» D. None of these

Discussion

81.	If default constructor is not defined, then how the objects of the class will be created?
A.	The compiler will generate error
B.	Error will occur at run-time.
C.	Compiler provides its default constructor to build the object.
D.	None of these
Answer» D. None of these

Discussion

82.	If base class has constructor with arguments, then it is ________________ for the derived class to have constructor and pass the arguments to base class constructor.
A.	Optional
B.	Mandatory
C.	Compiler dependent
D.	Error
Answer» C. Compiler dependent

Discussion

83.	If an argument to a function is declared as const, then _______ .
A.	function can modify the argument.
B.	Function can’t modify the argument.
C.	const argument to a function is not possible.
D.	None of these
Answer» C. const argument to a function is not possible.

Discussion

84.	If abstract class is inherited by derived class, then_______________ .
A.	Derived class should provide definition for all the pure virtual functions
B.	Derived class also become abstract if fails to implement pure virtual functions
C.	Objects of derived class can’t be created if it fails to implement pure virtual functions
D.	All of these
Answer» E.

Discussion

85.	If a program uses Inline Function, then the function is expanded inline at ___________.
A.	Compile time
B.	Run time
C.	Both a and b
D.	None of these
Answer» C. Both a and b

Discussion

86.	If a class contains pure virtual function, then it is termed as____________________ .
A.	Virtual class
B.	Sealed class
C.	Pure Local class
D.	Abstract Class
Answer» E.

Discussion

87.	If a class contains static variable, then every object of the class has its copy of static variable.
A.	True
B.	False
Answer» C.

Discussion

88.	How can we restrict a function to throw certain exceptions?
A.	Defining multiple try and catch block inside a function
B.	Defining generic function within try block
C.	Defining function with throw clause
D.	It is not possible in CPP to restrict a function
Answer» D. It is not possible in CPP to restrict a function

Discussion

89.	___________ header file is used for manipulators.
A.	< iomanipulator.h>
B.	< stdiomanip.h>
C.	< stdmanip.h>
D.	< iomanip.h>
Answer» E.

Discussion

90.	Generic catch handler must be placed at the end of all the catch handlers.
A.	True
B.	False
Answer» B. False

Discussion

91.	Generic catch handler is represented by ______________ .
A.	catch(..,)
B.	catch(---)
C.	catch(…)
D.	catch( void x)
Answer» D. catch( void x)

Discussion

92.	Generic pointers can be declared with__________ .
A.	auto
B.	void
C.	asm
D.	None of these
Answer» C. asm

Discussion

93.	Functions called from within a try block may also throw exception.
A.	True
B.	False
Answer» B. False

Discussion

94.	Function overloading can also be achieved if two or more functions differ only in their return types.
A.	True
B.	False
Answer» C.

Discussion

95.	Find the wrong statement/s about Abstract Class.
A.	We can’t create its objects.
B.	We can’t create pointers to an abstract class.
C.	It contains at least one pure virtual function.
D.	We can create references to an abstract class.
Answer» C. It contains at least one pure virtual function.

Discussion

96.	Exception handlers are declared with ____________ keyword.
A.	Try
B.	catch
C.	throw
D.	Finally
Answer» C. throw

Discussion

97.	During dynamic memory allocation in CPP, new operator returns _________ value if memory allocation is unsuccessful.
A.	False
B.
C.	Zero
D.	None of these
Answer» C. Zero

Discussion

98.	During a class inheritance in CPP, if the visibility mode or mode of derivation is not provided, then by default visibility mode is ___________.
A.	public
B.	protected
C.	private
D.	Friend
Answer» D. Friend

Discussion

99.	Due to ios::trunc mode, the file is truncated to zero length.
A.	True
B.	False
Answer» B. False

Discussion

100.	Default value of static variable is_____ .
A.	0
B.	1
C.	Garbage value
D.	Compiler dependent
Answer» B. 1

Discussion

Explore topic-wise MCQs in Computer Science.

Object oriented programming employs_________ programming approach.

Object based language differs from object oriented language as it does not support features _____ . 1. Encapsulation 2. Inheritance 3. Dynamic Binding 4. Abstraction 5. Polymorphism

Members of the class can be declared with auto, extern or register storage classes.

Logical expressions produce ____________ type results.

__________________ is the OOP feature and mechanism that binds together code and the data it manipulates, and keep both safe from outside world.

__________ is return type of is_open() function.

Is it possible to define a constructor with default arguments?

Is it mandatory to invoke/call a constructor for creating an object?

_______________ is a member function that is declared within a base class and redefined by derived class.

Irrespective of exception occurrence, catch handler will always get executed.

Inline functions may not work ______ . 1. If function contain static variables. 2. If function contain global and register variables. 3. If function returning value consists looping construct(i.e. for, while). 4. If inline functions are recursive. 5. If function contains const value.

In nested try blocks, there is no need to specify catch handler for inner try block. Outer catch handler is sufficient for the program.

In nested try blocks, if both inner and outer catch handlers are not able to handle the exception, then ______________ .

In nested try block, if inner catch handler gets executed, then _____________ .

In Multipath inheritance, in order to remove duplicate set of records in child class, we ___________ .

In CPP program, Can we declare and define a user defined function inside a struct as we do in a class ?

In CPP, the size of the character array should be one larger than the number of characters in the string.

In CPP, it is mandatory and must to initialize const variables.

In CPP, dynamic memory allocation is done using ______________ operator.

In CPP, cin and cout are the predefined stream __________ .

In case of operator overloading, operator function must be ______ . 1. Static member functions 2. Non- static member functions 3. Friend Functions

In case of inheritance where both base and derived class are having constructors, when an object of derived class is created then___________ .

In case of binary operator overloading with member function, which of following statement should be taken into consideration?

In any ways, Non-member function cannot have access to the private data of the class.

In a program, If there exists a function template with two parameters and normal function say void add(int , int), so add(3,4) will _____________________ .

If we have object from fstream class, then what is the default mode of opening the file?

If we have object from ofstream class, then default mode of opening the file is _____ .

If the derived class is struct, then default visibility mode is _______ .

If inner catch handler is not able to handle the exception then__________ .

If default constructor is not defined, then how the objects of the class will be created?

If base class has constructor with arguments, then it is ________________ for the derived class to have constructor and pass the arguments to base class constructor.

If an argument to a function is declared as const, then _______ .

If abstract class is inherited by derived class, then_______________ .

If a program uses Inline Function, then the function is expanded inline at ___________.

If a class contains pure virtual function, then it is termed as____________________ .

If a class contains static variable, then every object of the class has its copy of static variable.

How can we restrict a function to throw certain exceptions?

___________ header file is used for manipulators.

Generic catch handler must be placed at the end of all the catch handlers.

Generic catch handler is represented by ______________ .

Generic pointers can be declared with__________ .

Functions called from within a try block may also throw exception.

Function overloading can also be achieved if two or more functions differ only in their return types.

Find the wrong statement/s about Abstract Class.

Exception handlers are declared with ____________ keyword.

During dynamic memory allocation in CPP, new operator returns _________ value if memory allocation is unsuccessful.

During a class inheritance in CPP, if the visibility mode or mode of derivation is not provided, then by default visibility mode is ___________.

Due to ios::trunc mode, the file is truncated to zero length.

Default value of static variable is_____ .