Programming for Problem Solving Multiple Choice Questions
1. Which Of The Following Are Components Of Central Processing Unit(CPU)?
A. Arithmetic Logic Unit, Mouse
B. Arithmetic Logic Unit, Control Unit
C. Arithmetic Logic Unit, Integrated Circuits
D. Control Unit, Monitor
Answer: B.Arithmetic Logic Unit, Control Unit
2. In Which Of The Following Form, Data Is Stored In Computer?
A. Decimal
B. Binary
C. Hexadecimal
D. Octal
Answer: B.Binary
3. Which Level Language Is Assembly Language?
A. High-Level Programming Language
B. Medium-Level Programming Language
C. Low-Level Programming Language
D. Machine Language
Answer: C.Low-Level Programming Language
4. 1 Mega Byte Is Equal To
A. 1024 Bytes
B. 1024 Kilo Bytes
C. 1024 Giga Bits
D. 1024 Bits
Answer: B.1024 Kilo Bytes
5. One Byte Is Equal To How Many Bits ?
A. 4 Bits
B. 8 Bits
C. 12 Bits
D. 16 Bits
Answer: B.8 Bits
6. One Nibble Is Equal To How Many Bits ?
A. 4 Bits
B. 8 Bits
C. 12 Bits
D. 16 Bits
Answer: A.4 Bits
7. An Assembler Is Used To Translate A Program Written In ?
A. Low-Level Language
B. Machine Language
C. Assembly Language
D. High-Level Language
Answer: C.Assembly Language
8. We Can Insert Pre Written Code In A C Program By Using
A. #Read
B. #Get
C. #Include
D. #Put
Answer: C.#Include
9. Ritchie And Brian Kernighan Jointly Carried Out The Development Of C And That Version Is ________ .
A. ISO C
B. K&R C
C. ANSI C
D. R&K C
Answer: B.K&R C
10. Who Was Creator Of B Language, Which Inspired Dennis Ritchie To Create Strong Procedural Language Called C?
A. Thomas E. Kurtz
B. James Gosling
C. Brian Kernighan
D. Ken Thompson
Answer: D.Ken Thompson
11. Which Committee Standardize C Programming Language?
A. W3C
B. ANSI
C. ISO
D. TRAI
Answer: B.ANSI
12. Dennis Was Author Of Famous Programming Book _________ .
A. Thinking In C
B. C Programming For Scientist
C. The C Programming Language
D. C Programming And Techniques
Answer: C.The C Programming Language
13. Many Features Of C Were Derived From An Earlier Language Called _____.
A. PASCAL
B. BASIC
C. FORTRAN
D. B
Answer: D.B
14. C Programming Was Created At ______ By Dennis Ritchie.
A. AT&T Bell Laboratory
B. Stanford Lab
C. MIT University
D. Haward University
Answer: A.AT&T Bell Laboratory
15. Which Type Of Software Is An Operating System?
A. Utility Software
B. System Software
C. Application Software
D. Firmware Software
Answer: B.System Software
16. Microsoft Office Is Type Of?
A. Utility Software
B. System Software
C. Application Software
D. Firmware Software
Answer: C.Application Software
17. How Many Main() Function We Can Have In Our Project?
A. 1
B. 2
C. No Limit
D. Depends On Compiler
Answer: A.1
18. Is It Possible To Run Program Without Main() Function?
A. Yes
B. No
C. Option.
D. Option.
Answer: A.Yes
19. What Is Sizeof() In C?
A. Operator
B. Function
C. Macro
D. None Of These
Answer: A.Operator
20. Bitwise Operators Can Operate Upon?
A. Double And Chars
B. Floats And Doubles
C. Int And Floats
D. Int And Chars
Answer: D.Int And Chars
21. What Is C Tokens?
A. The Smallest Individual Units Of C Program
B. The Basic Element Recognized By The Compiler
C. The Largest Individual Units Of Program
D. A & B Both
Answer: D.A & B Both
22. What Is Keywords?
A. Keywords Have Some Predefine Meanings And These Meanings Can Be Changed.
B. Keywords Have Some Unknown Meanings And These Meanings Cannot Be Changed.
C. Keywords Have Some Predefine Meanings And These Meanings Cannot Be Changed.
D. None Of The Above
Answer: C.Keywords Have Some Predefine Meanings And These Meanings Cannot Be Changed.
23. What Is Constant?A Constants Have Fixed Values That Do Not Change During The Execution Of
A. Program
B. Constants Have Fixed Values That Change During The Execution Of A Program
C. Constants Have Unknown Values That May Be Change During The Execution Of A Program
D. Option.
Answer: A.Program
24. Which Is The Right Way To Declare Constant In C?
A. Int Constant Var =10;
B. Int Const Var = 10;
C. Const Int Var = 10;
D. B & C Both
Answer: D.B & C Both
25. Which Operators Are Known As Ternary Operator?
A. ::, ?.
B. ?, :
C. ?, ;;
D. None Of The Above
Answer: B.?, :
26. Total Number Of Keywords In C Are
A. 30
B. 12
C. 34
D. 32
Answer: D.32
27. The Compiler In C Ignores All Text Till The End Of Line Using
A. //
B. /
C. */
D. /*/
Answer: A.//
28. Printf() Belongs To Which Library Of C
A. Stdlib.H
B. Stdio.H
C. Stdout.H
D. Stdoutput.H
Answer: B.Stdio.H
29. What Is Correct Order Of Precedence In C
A. Addition, Division, Modulus
B. Addition, Modulus, Division
C. Multiplication, Substration, Modulus
D. Modulus, Multiplication, Substration
Answer: D.Modulus, Multiplication, Substration
30. In Switch Statement, Each Case Instance Value Must Be _______?
A. Constant
B. Variable
C. Special Symbol
D. None Of The Above
Answer: A.Constant
31. What Is The Work Of Break Keyword?
A. Halt Execution Of Program
B. Restart Execution Of Program
C. Exit From Loop Or Switch Statement
D. all
Answer: C.Exit From Loop Or Switch Statement
32. Which One Of The Following Sentences Is True ?
A. The Body Of A While Loop Is Executed At Least Once.
B. The Body Of A Do … While Loop Is Executed At Least Once.
C. The Body Of A Do … While Loop Is Executed Zero Or More Times.
D. A For Loop Can Never Be Used In Place Of A While Loop.
Answer: B.The Body Of A Do … While Loop Is Executed At Least Once.
33. A C Variable Cannot Start With
A. An Alphabet
B. A Number
C. A Special Symbol Other Than Underscore
D. Both (B) And (C)
Answer: D.Both (B) And (C)
34. Which Of The Following Shows The Correct Hierarchy Of Arithmetic Operations In C
A. / + * –
B. * – / +
C. + – / *
D. * / + –
Answer: D.* / + –
35. Int Main()
{
Extern Int I;
I = 20;
Printf(“%D”, Sizeof(I));
Return 0;
}
A. 20
B. 0
C. Undefined Reference To I
D. Linking Error
Answer: C.Undefined Reference To I
36. Is The Following Statement A Declaration Or DefinitionExtern Int I;
A. Declaration
B. Definition
C. none
D. all
Answer: A.Declaration
37. Int Main()
{
Int X = 10;
{
Int X = 0;
Printf(“%D”,X);
}
Return 0;
}
A. 10
B. Compilation Error
C. ‘0’
D. Undefined
Answer: C.’0′
38. //This Program Is Compiled On 32 Bit DEV-C++
Int Main()
{
Char *Ptr1, *Ptr2;
Printf(“%D %D”, Sizeof(Ptr1), Sizeof(Ptr2));
Return 0;
}
A. 1 1
B. 2 2
C. 4 4
D. none
Answer: C.4 4
39. What Should Be The Output:
Int Main()
{
Int A = 10/3;
Printf(“%D”,A);
Return 0;
}
A. 3.33
B. 3.0
C. 3
D. Option.
Answer: C.3
40. Which Of The Following Is Executed By Preprocess?
A. #Include
B. Return 0
C. Void Main(Int Argc , Char ** Argv)
D. none
Answer: A.#Include
41. Int Main()
{
Int A = 10.5;
Printf(“%D”,A);
Return 0;
}
A. 10.5
B. 10.0
C. 10
D. Compilation Error
Answer: C.10
42. Int Main()
{
Int _ = 10;
Int __ = 20;
Int ___ = _ + __;
Printf(“__%D”,___);
Return 0;
}
A. Compilation Error
B. Runtime Error
C. __0
D. __30
Answer: D.__30
43. Int Main()
{
Int A = 5;
Int B = 10;
Int C = A+B;
Printf(“%I”,C);
A. 0
B. 15
C. Undefined I
D. Any Other Compiler Error
Answer: B.15
44. int main()
{
int x;
x=10,20,30;
printf(“%d”,x);
return 0;
}
A. 10
B. 20
C. 30
D. Compilation Error
Answer: A.10
45. How many times C.com is printed?
int main()
{
int a = 0;
while(a++ < 5-++a)
printf(“C.com”);
return 0;
}
A. 5 times
B. 4 times
C. 3 times
D. 1 times
Answer: D.1 times
46. How many times C.com is printed?
int main()
{
int a = 0;
while(a++ < 5)
printf(“C.com”);
return 0;
}
A. 5 times
B. 4 times
C. 3 times
D. 1 times
Answer: A.5 times
47. How many times C.com is printed?
int main()
{
int a = 0;
while(a++)
printf(“C.com”);
return 0;
}
A. 1 time
B. 0 time
C. Infinite times(Untill Stack is overflow)
D. 2 times
Answer: B.0 time
48. How many times C.com is printed?
int main()
{
int a = 0;
while(++a)
{
printf(“C.com”);
}
return 0;
}
A. 1 time
B. Infinite Times(Untill Stack is overflow)
C. 2 times
D. Error
Answer: B.Infinite Times(Untill Stack is overflow)
49. What is output of below program?
int main()
{
int i,j,count;
count=0;
for(i=0; i<5; i++);
{
for(j=0;j<5;j++);
{
count++;
}
}
printf(“%d”,count);
return 0;
}
A. 55
B. 54
C. 1
Answer: C.1
50. What is output of below program?
int main()
{
int i,j,k,count;
count=0;
for(i=0;i<5;i++)
{
for(j=0;j<5;j++)
{
count++;
}
}
printf(“%d”,count);
return 0;
}
A. 5
B. 10
C. 25
D. 50
Answer: C.25
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–
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
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
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
55. How many loops are there in C
A. 1
B. 2
C. 3
D. 4
Answer: C.3
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
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
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
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
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
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
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
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
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
65. Which macro is used to insert assembly code in C program (GCCcompiler)?
A. __asm__
B. _asm_
C. __asm
D. asm
Answer: A.__asm__
66. Will compiler produce any compilation error if same header file isincluded two times?
A. YES
B. NO
C. Option.
D. Option.
Answer: B.NO
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
68. Which one of the following is invalid macro in C programming?
A. #pragma
B. #error
C. #ifndef
D. #elseif
Answer: D.#elseif
69. What is the extension of output file produced by Preprocessor?
A. .h
B. .exe
C. .i
D. .asm
Answer: C..i
70. Set of consecutive memory locations is called as ________.
A. Function
B. Array
C. Loop
D. Pointer
Answer: B.Array
71. Array can be considered as set of elements stored in consecutive memorylocations but having __________.
A. Same Data Type
B. Same Scope
C. None of these
D. Different Data Type
Answer: A.Same Data Type
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
73. Smallest element of an array is called as _______.
A. Middle Bound
B. Range
C. Upper Bound
D. Lower Bound
Answer: D.Lower Bound
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]
75. Array which is having ____ dimensions is called as 2-D array.
A. 3
B. 2
C. 5
D. 4
Answer: B.2
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
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
78. Array is an example of _______ type memory allocation.
A. Compile Time
B. Run Time
C. none
D. all
Answer: A.Compile Time
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
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
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.
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
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
84. Pointer variable is declared using preceding _________ sign.
A. ^
B. *
C. &
D. %
Answer: B.*
85. Address stored in the pointer variable is of type __________.
A. Integer
B. Array
C. Floating
D. Character
Answer: A.Integer
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
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
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 } ;
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);
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
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
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
93. Size of void pointer is
A. 1 byte
B. 2 byte
C. 3 byte
D. 4 byte
Answer: B.2 byte
94. To print a single character in ouptut,which function is used?
A. getchar()
B. gets()
C. putchar()
D. puts()
Answer: C.putchar()
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
96. Explicit data type conversion is called
A. Type casting
B. conversion
C. separation
D. none
Answer: A.Type casting
97. which of these is not a valid character constant
A. “A”
B. ‘A’
C. “*”
D. “+”
Answer: A.“A”
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
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
100. In a function call, _____________ is passed as arguments.
A. variables
B. constants
C. Expressions
D. All the above
Answer: D.All the above
101. () is used for _________
A. function body
B. Arguments
C. Return type
D. Declaration of function
Answer: B.Arguments
102. which is better memory allocation when size is not known
A. static
B. dynamic
C. both
D. neither
Answer: B.dynamic
103. which of the following is the best for getting a string with space from thestandard input
A. gets
B. getc
C. fgets
D. puts
Answer: C.fgets
104. Which statement is used to compare the two strings?
A. strcmp
B. strcompare
C. stringcompare
D. str_cmp
Answer: A.strcmp
105. void main()
{
printf();
}
A. Run-Time Error
B. Compile-Time Error
C. none
D. all
Answer: B.Compile-Time Error