100+ Programming for Problem Solving Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) .

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51.	What is output of below program? int main() { int i,j; for(i = 0,j=0;i<5;i++) { printf("%d%d--",i,j); } return 0; }
A.	0--01--12--23--34--
B.	00--10--20--30--40--
C.	Compilation Error
D.	00--01--02--03--04--
Answer» B. 00--10--20--30--40--

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52.	What is output of below program? int main() { int i; for(i=0; i<5; ++i++) { printf("Hello"); } return 0; }
A.	Hello is printed 5 times
B.	Compilation Error
C.	Hello is printed 2 times
D.	Hello is printed 3 times
Answer» B. Compilation Error

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53.	What is output of below program? int main() { for(; ;); for(; ;); printf("Hello"); return 0; }
A.	Compilation Error
B.	Runtime Error
C.	Nothing is printed
D.	Hello is printed infinite times
Answer» C. Nothing is printed

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54.	What is the output of below program? int main() { for(; ;) for(; ;) printf("Hello.."); return 0; }
A.	Compilation Error
B.	Runtime Error
C.	Hello is printed one time
D.	Hello is printed infinite times
Answer» D. Hello is printed infinite times

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55.	How many loops are there in C
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

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56.	What is the following is invalid header file in C?
A.	math.h
B.	mathio.h
C.	string.h
D.	ctype.h
Answer» B. mathio.h

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57.	What is storage class for variable A in below code? int main() { int A; A = 10; printf("%d", A); return 0; }
A.	extern
B.	auto
C.	register
D.	static
Answer» B. auto

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58.	#include "stdio.h" int main() { int a@ = 10; printf("%d", a@); return 0; }
A.	10
B.	10@
C.	@
D.	[Error] stray '@' in program
Answer» D. [Error] stray '@' in program

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59.	#include "stdio.h" int main() { int a = 10; printf("%d", a); int a = 20; printf("%d",a); return 0; }
A.	1020
B.	Error: Redeclartion of a
C.	2020
D.	1010
Answer» B. Error: Redeclartion of a

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60.	#include "stdio.h" int a = 20; int main() { int a = 10; printf("%d", ::a); return 0; }
A.	10
B.	20
C.	::20
D.	::10
Answer» B. 20

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61.	#include "stdio.h" int main() { int a = 10, b = 20; if(a=b) { printf("Easy"); } else { printf("Hard"); } return 0; }
A.	Easy
B.	Hard
C.	EasyHard
D.	Error in program
Answer» A. Easy

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62.	Which gcc flag is used to enable all Compiler warnings?
A.	gcc -W
B.	gcc -w
C.	gcc -Wall
D.	gcc -wall
Answer» C. gcc -Wall

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63.	Which gcc flag is used to generate maximum debug information?
A.	gcc -g0
B.	gcc –g1
C.	gcc -g
D.	gcc –g3
Answer» D. gcc –g3

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64.	Which macro is used to insert assembly code in C program (VC++ compiler)?
A.	__asm__
B.	_asm_
C.	__asm
D.	asm
Answer» C. __asm

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65.	Which macro is used to insert assembly code in C program (GCC compiler)?
A.	__asm__
B.	_asm_
C.	__asm
D.	asm
Answer» A. __asm__

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66.	Will compiler produce any compilation error if same header file is included two times?
A.	YES
B.	NO
C.	Option.
D.	Option.
Answer» B. NO

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67.	What should be the output of below program? #define # @ @include "stdio.h" int main() { printf("C.com"); return 0; }
A.	C.com
B.	Nothing
C.	Compilation Error
D.	Depends on Complier
Answer» C. Compilation Error

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68.	Which one of the following is invalid macro in C programming?
A.	#pragma
B.	#error
C.	#ifndef
D.	#elseif
Answer» D. #elseif

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69.	What is the extension of output file produced by Preprocessor?
A.	.h
B.	.exe
C.	.i
D.	.asm
Answer» C. .i

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70.	Set of consecutive memory locations is called as ________.
A.	Function
B.	Array
C.	Loop
D.	Pointer
Answer» B. Array

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71.	Array can be considered as set of elements stored in consecutive memory locations but having __________.
A.	Same Data Type
B.	Same Scope
C.	None of these
D.	Different Data Type
Answer» A. Same Data Type

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72.	In Array, There is one to one correspondence between set of ________ and set of values.
A.	Indices
B.	Variables
C.	Constants
D.	Memory Locations
Answer» A. Indices

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73.	Smallest element of an array is called as _______.
A.	Middle Bound
B.	Range
C.	Upper Bound
D.	Lower Bound
Answer» D. Lower Bound

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74.	If we have declared an array described below – int arr[6]; then which of the following array element is considered as last array element ?
A.	arr[6]
B.	arr[4]
C.	arr[0]
D.	arr[5]
Answer» D. arr[5]

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75.	Array which is having ____ dimensions is called as 2-D array.
A.	3
B.	2
C.	5
D.	4
Answer» B. 2

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76.	What is maximum dimension that array can have in c programming?
A.	2
B.	4
C.	Theoretically No Limit but practically limit depends on memory
D.	3
Answer» C. Theoretically No Limit but practically limit depends on memory

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77.	Array with last element 'n' will always have array size equal to _______.
A.	n+1
B.	n-1
C.	n+n
D.	n
Answer» A. n+1

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78.	Array is an example of _______ type memory allocation.
A.	Compile Time
B.	Run Time
C.	none
D.	all
Answer» A. Compile Time

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79.	Array is ______ data type in C Programming language.
A.	Custom Data Type
B.	Primitive Data Type
C.	None of these
D.	Derived Data Type
Answer» D. Derived Data Type

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80.	A Pointer to a block of memory is considered same as an array.
A.	NO
B.	YES
C.	none
D.	all
Answer» B. YES

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81.	What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array?
A.	The element will be set to 0.
B.	The compiler would report an error.
C.	The array size would appropriately grow.
D.	The program may crash if some important data gets overwritten.
Answer» D. The program may crash if some important data gets overwritten.

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82.	If you pass an array as an argument to a function, what actually gets passed?
A.	Base address of the array
B.	Value of elements in array
C.	First element of the array
D.	Address of the last element of array
Answer» A. Base address of the array

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83.	Pointer is special kind of variable which is used to store __________ of the variable.
A.	Address
B.	Value
C.	Variable Name
D.	Data Type
Answer» A. Address

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84.	Pointer variable is declared using preceding _________ sign.
A.	^
B.	*
C.	&
D.	%
Answer» B. *

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85.	Address stored in the pointer variable is of type __________.
A.	Integer
B.	Array
C.	Floating
D.	Character
Answer» A. Integer

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86.	Consider the 32 bit compiler. We need to store address of integer variable to integer pointer. What will be the size of integer pointer?
A.	10 Bytes
B.	4 Bytes
C.	2 Bytes
D.	6 Bytes
Answer» C. 2 Bytes

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87.	In order to fetch the address of the variable we write preceding _________ sign before variable name.
A.	Asteriks
B.	Percent
C.	Comma
D.	Ampersand
Answer» D. Ampersand

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88.	What is right way to Initialization array?
A.	int num[6] = { 2, 4, 12, 5, 45, 5 } ;
B.	int n{} = { 2, 4, 12, 5, 45, 5 } ;
C.	int n{6} = { 2, 4, 12 } ;
D.	int n(6) = { 2, 4 , 12, 5, 45, 5 }
Answer» A. int num[6] = { 2, 4, 12, 5, 45, 5 } ;

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89.	What is the right way to access value of structure variable book{ price, page }?
A.	printf("%d%d", book.price, book.page);
B.	printf("%d%d", price.book, page.book);
C.	printf("%d%d", price::book, page::book);
D.	printf("%d%d", price -->book, page -->
Answer» A. printf("%d%d", book.price, book.page);

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90.	What is true about fputs function
A.	write to a file
B.	takes two parameters
C.	requires a file pointer
D.	all of above
Answer» D. all of above

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91.	Wild pointer in C
A.	if pointer is pointing to a memory location from where variable has been deleted
B.	if pointer has not been initialized
C.	if pointer has not defined properly
D.	if pointer pointing to more than one variable
Answer» B. if pointer has not been initialized

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92.	Any type of modification on the parameter inside the function will reflect in actual variable value can be related to..
A.	call by value
B.	call by reference
C.	both of above
D.	none of above
Answer» B. call by reference

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93.	Size of void pointer is
A.	1 byte
B.	2 byte
C.	3 byte
D.	4 byte
Answer» B. 2 byte

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94.	To print a single character in ouptut,which function is used?
A.	getchar()
B.	gets()
C.	putchar()
D.	puts()
Answer» C. putchar()

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95.	#define t 10 void main() { printf("%d",t); }
A.	10
B.	Error:Unfined symbol 't'
C.	Error:Improper placement of preprocessor
D.	none of the above
Answer» A. 10

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96.	Explicit data type conversion is called
A.	Type casting
B.	conversion
C.	separation
D.	none
Answer» A. Type casting

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97.	which of these is not a valid character constant
A.	“A”
B.	‘A’
C.	“*”
D.	“+”
Answer» A. “A”

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98.	If 'a' is the integer which is not statically initialized then what is the value of 'a'?
A.	zero
B.	garbage
C.	none of these
D.	One
Answer» B. garbage

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99.	C is a ____________________ language
A.	Platform independent programming
B.	Platform dependent programming
C.	Object oriented programming
D.	None of the above.
Answer» B. Platform dependent programming

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100.	In a function call, _____________ is passed as arguments.
A.	variables
B.	constants
C.	Expressions
D.	All the above
Answer» D. All the above

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100+ Programming for Problem Solving Solved MCQs

What is output of below program? int main() { int i,j; for(i = 0,j=0;i<5;i++) { printf("%d%d--",i,j); } return 0; }

What is output of below program? int main() { int i; for(i=0; i<5; ++i++) { printf("Hello"); } return 0; }

What is output of below program? int main() { for(; ;); for(; ;); printf("Hello"); return 0; }

What is the output of below program? int main() { for(; ;) for(; ;) printf("Hello.."); return 0; }

How many loops are there in C

What is the following is invalid header file in C?

What is storage class for variable A in below code? int main() { int A; A = 10; printf("%d", A); return 0; }

#include "stdio.h" int main() { int a@ = 10; printf("%d", a@); return 0; }

#include "stdio.h" int main() { int a = 10; printf("%d", a); int a = 20; printf("%d",a); return 0; }

#include "stdio.h" int a = 20; int main() { int a = 10; printf("%d", ::a); return 0; }

#include "stdio.h" int main() { int a = 10, b = 20; if(a=b) { printf("Easy"); } else { printf("Hard"); } return 0; }

Which gcc flag is used to enable all Compiler warnings?

Which gcc flag is used to generate maximum debug information?

Which macro is used to insert assembly code in C program (VC++ compiler)?

Which macro is used to insert assembly code in C program (GCC compiler)?

Will compiler produce any compilation error if same header file is included two times?

What should be the output of below program? #define # @ @include "stdio.h" int main() { printf("C.com"); return 0; }

Which one of the following is invalid macro in C programming?

What is the extension of output file produced by Preprocessor?

Set of consecutive memory locations is called as ________.

Array can be considered as set of elements stored in consecutive memory locations but having __________.

In Array, There is one to one correspondence between set of ________ and set of values.

Smallest element of an array is called as _______.

If we have declared an array described below – int arr[6]; then which of the following array element is considered as last array element ?

Array which is having ____ dimensions is called as 2-D array.

What is maximum dimension that array can have in c programming?

Array with last element 'n' will always have array size equal to _______.

Array is an example of _______ type memory allocation.

Array is ______ data type in C Programming language.

A Pointer to a block of memory is considered same as an array.

What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array?

If you pass an array as an argument to a function, what actually gets passed?

Pointer is special kind of variable which is used to store __________ of the variable.

Pointer variable is declared using preceding _________ sign.

Address stored in the pointer variable is of type __________.

Consider the 32 bit compiler. We need to store address of integer variable to integer pointer. What will be the size of integer pointer?

In order to fetch the address of the variable we write preceding _________ sign before variable name.

What is right way to Initialization array?

What is the right way to access value of structure variable book{ price, page }?

What is true about fputs function

Wild pointer in C

Any type of modification on the parameter inside the function will reflect in actual variable value can be related to..

Size of void pointer is

To print a single character in ouptut,which function is used?

#define t 10 void main() { printf("%d",t); }

Explicit data type conversion is called

which of these is not a valid character constant

If 'a' is the integer which is not statically initialized then what is the value of 'a'?

C is a ____________________ language

In a function call, _____________ is passed as arguments.

What is output of below program?
int main()
{
int i,j;
for(i = 0,j=0;i<5;i++)
{
printf("%d%d--",i,j);
}
return 0;
}

What is output of below program?
int main()
{
int i;
for(i=0; i<5; ++i++)
{
printf("Hello");
}
return 0;
}

What is output of below program?
int main()
{
for(; ;);
for(; ;);
printf("Hello");
return 0;
}

What is the output of below program?
int main()
{
for(; ;)
for(; ;)
printf("Hello..");
return 0;
}

What is storage class for variable A in below code?
int main()
{
int A;
A = 10;
printf("%d", A);
return 0;
}

#include "stdio.h"
int main()
{
int a@ = 10;
printf("%d", a@);
return 0;
}

#include "stdio.h"
int main()
{
int a = 10;
printf("%d", a);
int a = 20;
printf("%d",a);
return 0;
}

#include "stdio.h"
int a = 20;
int main()
{
int a = 10;
printf("%d", ::a);
return 0;
}

#include "stdio.h"
int main()
{
int a = 10, b = 20;
if(a=b)
{
printf("Easy");
}
else
{
printf("Hard");
}
return 0;
}

What should be the output of below program?
#define # @
@include "stdio.h"
int main()
{
printf("C.com");
return 0;
}

If we have declared an array described below –
int arr[6];
then which of the following array element is considered as last array element ?

#define t 10
void main()
{
printf("%d",t);
}