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1000+ C Programming Multiple Choice Question Answer [Solved]

Thursday 9th of March 2023

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1. Identify the wrong statement
A. putchar(65)
B. putchar('x')
C. putchar("x")
D. putchar('
')
Answer : C
2. The output of the following code is: 
void main() 
{
int a; 
int &b = a;
a=100; 
printf("b=%d\ta=%d
", b,a);
}
A. b=100 a=100
B. b=100 a=0
C. b=0 a=100
D. Error
Answer : D
3. ------ is the ternary operator
A. ?,-
B. ?,:
C. ++<--
D. none of the above
Answer : B
4. When a user defined function is defined in program, then it has to be called at least once from the main().
A. True
B. False
C.
D.
Answer : B
5. Which among the following is a unconditional control structure
A. do-while
B. if-else
C. goto
D. for
Answer : C
6. The same variable names of automatic type can be used in different functions without any conflict.
A. True
B. False
C.
D.
Answer : A
7. Which of the following is a valid destructor of the class name "Country"
A. int ~Country()
B. void Country()
C. int ~Country(Country obj)
D. void ~Country()
Answer : B
8. The output of the following code is: 
void main() 
{
float a;
int x = 10, y = 3; a = x / y;
printf("%f", a); }
A. 3.999999
B. Error
C. 3
D. 3.000000
Answer : D
9. 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
10. When is std::bad_alloc exception thrown?
A. When new operator cannot allocate memory
B. When alloc function fails
C. When type requested for new operation is considered bad<  thisexception is thrown
D. When delete operator cannot delete teh allocated (corrupted) object
Answer : D
11. p++ executes faster than p + 1.
A. True
B. False
C.
D.
Answer : A
12. What would be the output of the following program?
int x=40;
main(){
int x=20;
printf("
%d",x);
}
A. 40
B. 20
C. Compilation Error
D. Garbeg Value
Answer : B
13. Bitwise operators can operate upon?
A. double and chars
B. floats and doubles
C. ints and floats
D. ints and chars
Answer : D
14. unsigned' is a valid variable name.
A. True
B. False
C.
D.
Answer : B
15. Which of the following is not recommended in a header file?
A. Type definitions (typedefs)
B. Class definitions
C. Function definitions
D. Template definitions
Answer : D
16. An array elements are always stored in _________ memory locations.
A. Sequential
B. Random
C. Sequential and Random
D. None of the above
Answer : A
17. The value of an enumerated datatype can be read using scanf() function.
A. True
B. False
C.
D.
Answer : B
18. The output of the following code is: 
main() 
{
int a = 5, b = 6; 
(a == b? printf("%d", a)); 
}
A. 0
B. 5
C. Error
D. None of the above
Answer : C
19. Which options shows the correct hierarchy of arithmetic operators
A. **, * or /, + or -
B. **, *, /, +, -
C. **< /< *< +<-
D. / or *, - or +
Answer : D
20. It is necessary to initialize the array at the time of declaration.
A. True
B. False
C.
D.
Answer : B
21. The output of the following code is: 
void main() 
{
int a = 0; 
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a); 
}
A. a = 100
B. a = 50
C. compilation error
D. runtime error
Answer : A
22. All elements of a structure are allocated contiguous memory locations.
A. True
B. False
C.
D.
Answer : A
23. && and & operators have the same meaning.
A. True
B. False
C.
D.
Answer : B
24. printf() is not a library function.
A. True
B. False
C.
D.
Answer : B
25. printf("%d", sizeof('2')); will print 2.
A. True
B. False
C.
D.
Answer : B
26. A recursive function calls itself again and again.
A. True
B. False
C.
D.
Answer : A
27. Nested macros are allowed.
A. True
B. False
C.
D.
Answer : B
28. Single operations involving entire arrays are permitted in C.
A. True
B. False
C.
D.
Answer : A
29. The expression 'int j = 6 + 3 % -9;' evaluates to -1.
A. True
B. False
C.
D.
Answer : B
30. The output of the following code is:
void change (char *k) 
{
k="Hello";
return; 
} 
main() 
{ 
char *ch = "World";;
change(ch); 
printf("%s", ch); 
}
A. Hello
B. World
C. Compilation error
D. Hello World
Answer : B
31. C programming language was developed by
A. Dennis Ritchie
B. Ken Thompson
C. Bill Gates
D. Peter Norton
Answer : A
32. The output of the following code is: 
main() 
{ 
int sub[50]; 
for(i=0; i<=48;i++) 
{ 
sub[i]=i; 
printf("
%d", sub[i]);
}
}
A. 0 to 48 will be displayed
B. 48
C. 49
D. Compilation Error
Answer : D
33. The output of the following code is: 
void main()
{ 
int a = 20;
printf("%d\t%d
", ++a, a);
}
A. 21 21
B. 20 21
C. 21 20
D. 20 20
Answer : C
34. strcat() function ----------------------- two strings.
A. delete
B. concatenate
C. compare
D. none of the above
Answer : B
35. If 'str' is a string of 7 characters, the statement printf("%4s", str); will display ------characters.
A. 4
B. 7
C. 6
D. 0
Answer : A
36. Which of the following is not an infinite loop
A. int i =1;
while (1)
{i++;}
B. for( ; ; );
C. int true=0< false;
while (true)
{false = 1;}
D. int y, x = 0;
do
{y = x;}
while (x==0);
Answer : C
37. Which header file is essential for using strcmp() function?
A. string.h
B. strings.h
C. text.h
D. strcmp.h
Answer : A
38. The output of the following code is: 
#define sqr(x= x*x) 
main() 
{
int a = 10, b = 5; 
printf("%d, %d", sqr(a+b),sqr(++a));
}
A. 77, 121
B. 225, 121
C. 77< 144
D. Compilation error
Answer : D
39. The output of the following code is: 
main() 
{
int a = 0; 
for (; i = 0; i++) 
printf("%d", a); 
}
A. 0
B. Nothing will be displayed
C. Infinite loop
D. None of the above
Answer : D
40. Expression 4**3 evaluates to 64.
A. True
B. False
C.
D.
Answer : B
41. Union is used to hold different data at different time.
A. True
B. False
C.
D.
Answer : A
42. struct stud
{
int roll;
char name[20];
float marks;
} *p;
What will be the byte size of p?
A. 24
B. 2
C. 26
D. None
Answer : B
43. What does STL stand for?
A. Simple Template Library
B. Standard Template Library
C. Static Type Library
D. Single Type-based Library
Answer : A
44. Which of the following is allowed in a C Arithmetic instruction
A. []
B. {}
C. ()
D. None of the above
Answer : C
45. The identifier argv[] is a pointer to an array of strings.
A. True
B. False
C.
D.
Answer : B
46. The output of the following code is: 
void main() 
{ 
static int a = 1, b, c;
if (a>=2) b=2; c=3;
printf("%d\t%d", b,c); 
}
A. 2 3
B. 0 3
C. 0 0
D. 2 0
Answer : B
47. Which of the following keyword supports dynamic method resolution?
A. abstract
B. Virtual
C. Dynamic
D. Typeid
Answer : A
48. A multidimensional array A[10][9] can store-------- number of elements
A. 91
B. 88
C. 90
D. 89
Answer : C
49. Which one of the following is not a valid reserved keyword in C++
A. Explicit
B. Public
C. Implicit
D. Private
Answer : C
50. How many times the following loop will execute?
for (a = 0; a < 4; a++)
printf("hello
");
A. 3
B. 4
C. 5
D. infinite
Answer : B
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