1331 + Mcqs in C/C++ Page 25 McqOptions

1201.	What is a Constructor?
A.	A function called when an instance of a class is initialized.
B.	A function that is called when an instance of a class is deleted.
C.	A special function to change the value of dynamically allocated memory.
D.	A function that is called in order to change the value of a variable.
Answer» B. A function that is called when an instance of a class is deleted.

Discussion

1202.	What will be the output of the following program ? main() { char p = “ayqm”; printf (“%c”, ++(p++));}
A.	b
B.	z
C.	q
D.	n
Answer» B. z

Discussion

1203.	Output of the program given below is int i; main() { printf(“%d”, i); }
A.	1
B.	0
C.	-1
D.	Null
Answer» C. -1

Discussion

1204.	What is the output of the following program segment? main() { int i = ++2; printf(“%d\n”, i); }
A.	3
B.	2
C.	0
D.	-1
Answer» B. 2

Discussion

1205.	What is the output of the following program segment? main() { int i = 1; do { printf(“%d..”, i); } while(i--); }
A.	0..1..
B.	1..0..
C.	0
D.	-1
Answer» C. 0

Discussion

1206.	What is the output of the following program? main ( ) { extern int x; x = 20; printf(“\n%d”, x); }
A.	0
B.	20
C.	error
D.	garbage value
Answer» D. garbage value

Discussion

1207.	The conditional expressions are evaluated from .............
A.	top down
B.	bottom up
C.	middle
D.	end
Answer» B. bottom up

Discussion

1208.	If and the switch statements are called as ................. statements.
A.	iteration
B.	jump
C.	selection
D.	conditional
Answer» D. conditional

Discussion

1209.	Latency time is ...................
A.	time taken by read/write head mechanism to position itself over appropriate cylinder
B.	time taken to transfer a data from memory
C.	time taken by appropriate sector to come under read/write head
D.	time taken to retrieve the data
Answer» D. time taken to retrieve the data

Discussion

1210.	Seek time is ...............
A.	time taken to retrieve a data
B.	) time taken by read/write head mechanism to position itself over appropriate cylinder
C.	time taken by appropriate sector to come under read/write
D.	time taken to find out the data
Answer» C. time taken by appropriate sector to come under read/write

Discussion

1211.	Each object has its own copies of the class .................
A.	data
B.	code
C.	function
D.	instance variables
Answer» E.

Discussion

1212.	................ operator links the name of the object with the name of the member.
A.	->
B.	.(Dot)
C.	&
D.	*
Answer» C. &

Discussion

1213.	Code is contained in .............. of the class.
A.	object
B.	template
C.	function
D.	array
Answer» D. array

Discussion

1214.	The ............. statements are simply a group of related statements that are treated as a single unit.
A.	block
B.	multiple
C.	related
D.	logical
Answer» B. multiple

Discussion

1215.	What is the output of the following program? main( ) { int i=4, z=12; if(i=5 \|\| z>50) printf(“hello”); else printf(“hye”); }
A.	hello
B.	hye
C.	syntax error
D.	hellohye
Answer» B. hye

Discussion

1216.	Which of the following statement is true about a function?
A.	An invoking function must pass arguments to the invoked function.
B.	Every function returns a value to the invoker.
C.	A function may contain more than one return statement.
D.	Every function must be defined in its own separate file.
Answer» B. Every function returns a value to the invoker.

Discussion

1217.	The given FOR loop is for ( ; ; ) { printf(“ ”); }
A.	valid
B.	indefinite
C.	invalid
D.	displays runtime errors
Answer» E.

Discussion

1218.	C language was invented by
A.	Abacus
B.	Charles babage
C.	Thomson
D.	Dennis Ritchie
Answer» E.

Discussion

1219.	The function that allocates requested size of bytes and returns a pointer to the first byte of the allocated space is:
A.	realloc
B.	malloc
C.	calloc
D.	none of the above
Answer» C. calloc

Discussion

1220.	Which of the following is not a valid escape code?
A.
B.	v
C.	f
D.	w
Answer» E.

Discussion

1221.	Which of the following is the proper keyword to deallocate memory?
A.	free
B.	delete
C.	clear
D.	remove
Answer» B. delete

Discussion

1222.	Which of the following is the proper keyword to allocate memory?
A.	new
B.	malloc
C.	create
D.	value
Answer» C. create

Discussion

1223.	The escape sequence \o represents ................
A.	back space
B.	new line
C.	octal number
D.	hexadecimal number
Answer» D. hexadecimal number

Discussion

1224.	Which of the following is not true about constants in c++?
A.	It is also called literals
B.	It has not compiled place in memory
C.	It s value cannot be changed
D.	) The address value cannot be of constant data type
Answer» E.

Discussion

1225.	................ object is used to print wide characters.
A.	wout
B.	print
C.	w_cout
D.	cout
Answer» B. print

Discussion

1226.	The ................ is contained in instance variable defined by the class.
A.	data
B.	code
C.	object
D.	Function
Answer» B. code

Discussion

1227.	The code and data are called ................ of the class.
A.	instances
B.	instance variables
C.	members
D.	object
Answer» D. object

Discussion

1228.	.................... is the data type that can accommodate char that require more than 8-bits
A.	char
B.	wchar_t
C.	w char
D.	char_t
Answer» C. w char

Discussion

1229.	What is the output of the following program? main ( ) { int x = 2, y = 5; if (x < y) return (x = x+y); else printf (“z1”); printf(“z2”); }
A.	z2
B.	z1z2
C.	Compilation error
D.	None of these
Answer» E.

Discussion

1230.	A .................. is a storage location that contains data value.
A.	function
B.	structure
C.	variable
D.	key word
Answer» D. key word

Discussion

1231.	The ................... is predefined identifier that is linked to console output
A.	out
B.	print
C.	cin
D.	cout
Answer» E.

Discussion

1232.	Which of the following is one of the international keyword?
A.	Int
B.	Bitand
C.	try
D.	While
Answer» C. try

Discussion

1233.	The name of a function variable or class is called ...................
A.	libraries
B.	stream
C.	identifiers
D.	keywords
Answer» D. keywords

Discussion

1234.	................. in a program source code, documents the meaning of the code.
A.	comment
B.	function
C.	class
D.	main function
Answer» B. function

Discussion

1235.	C++ begins its execution with ................
A.	header file
B.	main
C.	class
D.	declaration
Answer» C. class

Discussion

1236.	The commonly used term for a sub routine in c++ is ...............
A.	structure
B.	class
C.	function
D.	program
Answer» D. program

Discussion

1237.	A joint ANSI /ISO committee was formed in ................ to define standard C++.
A.	1986
B.	1987
C.	1988
D.	1989
Answer» E.

Discussion

1238.	The ............... is the standard input/ouput library in C++.
A.	stdio
B.	iostream
C.	conio
D.	std
Answer» C. conio

Discussion

1239.	C++ was developed by.............
A.	Dr. Bjarne stroustrup
B.	Dennis Ritc
C.	Borland
D.	ANSI
Answer» B. Dennis Ritc

Discussion

1240.	To rethrow an exception .................. is specified.
A.	throw without a value
B.	catch with a value
C.	rethrow
D.	catch without a value
Answer» B. catch with a value

Discussion

1241.	The .................. is a short function that gets or sets the value of a private instance variable.
A.	inline
B.	friend
C.	accessor
D.	void
Answer» D. void

Discussion

1242.	The ............. manipulator skips leading whitespaces.
A.	sw
B.	ws
C.	wy
D.	skipws
Answer» C. wy

Discussion

1243.	The second element of the array int zones[5]= { 43,54,56,76,78} can be accessed by .................
A.	zones[2]
B.	zones[1]
C.	zones[3]
D.	zones[4]
Answer» C. zones[3]

Discussion

1244.	The elements of an array can be accessed by providing integer expression called ...............
A.	superscripts
B.	elements
C.	values
D.	subscripts
Answer» E.

Discussion

1245.	The ............... is the function that detects the end of file.
A.	eof()
B.	getline()
C.	putline()
D.	clear()
Answer» B. getline()

Discussion

1246.	The current position of each file pointer using the functions ............... and ...............
A.	pos_type tellg(), pos_type tellp()
B.	pos_type tellx(), pos_type tellf()
C.	pos_type tellx(), pos_type tellp()
D.	pos_type tellf(), pos_type tellp()
Answer» B. pos_type tellx(), pos_type tellf()

Discussion

1247.	................... determines the type of an object at the runtime.
A.	Static
B.	Dynamic
C.	Typeid
D.	Typedef
Answer» D. Typedef

Discussion

1248.	The ............... keyword brings the members of a namespace into view.
A.	view
B.	using
C.	additive
D.	show
Answer» C. additive

Discussion

1249.	If an allocation request is not fulfilled ................... exception is thrown.
A.	wrong_alloc
B.	re_alloc
C.	malloc
D.	bad_alloc
Answer» E.

Discussion

1250.	The keyword ................ is used to declare a generic function.
A.	generic
B.	template
C.	virtual
D.	friend
Answer» C. virtual

Discussion

Explore topic-wise MCQs in Technical Programming.

What is a Constructor?

What will be the output of the following program ? main() { char *p = “ayqm”; printf (“%c”, ++*(p++));}

Output of the program given below is int i; main() { printf(“%d”, i); }

What is the output of the following program segment? main() { int i = ++2; printf(“%d\n”, i); }

What is the output of the following program segment? main() { int i = 1; do { printf(“%d..”, i); } while(i--); }

What is the output of the following program? main ( ) { extern int x; x = 20; printf(“\n%d”, x); }

The conditional expressions are evaluated from .............

If and the switch statements are called as ................. statements.

Latency time is ...................

Seek time is ...............

Each object has its own copies of the class .................

................ operator links the name of the object with the name of the member.

Code is contained in .............. of the class.

The ............. statements are simply a group of related statements that are treated as a single unit.

What is the output of the following program? main( ) { int i=4, z=12; if(i=5 || z>50) printf(“hello”); else printf(“hye”); }

Which of the following statement is true about a function?

The given FOR loop is for ( ; ; ) { printf(“ ”); }

C language was invented by

The function that allocates requested size of bytes and returns a pointer to the first byte of the allocated space is:

Which of the following is not a valid escape code?

Which of the following is the proper keyword to deallocate memory?

Which of the following is the proper keyword to allocate memory?

The escape sequence \o represents ................

Which of the following is not true about constants in c++?

................ object is used to print wide characters.

The ................ is contained in instance variable defined by the class.

The code and data are called ................ of the class.

.................... is the data type that can accommodate char that require more than 8-bits

What is the output of the following program? main ( ) { int x = 2, y = 5; if (x < y) return (x = x+y); else printf (“z1”); printf(“z2”); }

A .................. is a storage location that contains data value.

The ................... is predefined identifier that is linked to console output

Which of the following is one of the international keyword?

The name of a function variable or class is called ...................

................. in a program source code, documents the meaning of the code.

C++ begins its execution with ................

The commonly used term for a sub routine in c++ is ...............

A joint ANSI /ISO committee was formed in ................ to define standard C++.

The ............... is the standard input/ouput library in C++.

C++ was developed by.............

To rethrow an exception .................. is specified.

The .................. is a short function that gets or sets the value of a private instance variable.

The ............. manipulator skips leading whitespaces.

The second element of the array int zones[5]= { 43,54,56,76,78} can be accessed by .................

The elements of an array can be accessed by providing integer expression called ...............

The ............... is the function that detects the end of file.

The current position of each file pointer using the functions ............... and ...............

................... determines the type of an object at the runtime.

The ............... keyword brings the members of a namespace into view.

If an allocation request is not fulfilled ................... exception is thrown.

The keyword ................ is used to declare a generic function.

What will be the output of the following program ? main() { char p = “ayqm”; printf (“%c”, ++(p++));}