1000+ C Programming MCQ for NEET [Solved]

1. What is the difference between overloaded functions and overridden functions?
A. Overloading is a dynamic or run-time binding and Overriding is static or compile-time binding
B. Redefining a function in a friend class is called function overriding while Redefining a function in a derived class is called a overloaded fucntion.
C. Overloading is a static or compile-time binding and Overriding is dynamic or run-time binding
D. Redefining a function in a friend class is called function overloading while Redefining a function in a derived class is called as overridden fucnion.
Answer : B

2. The function fopen() on failure returns---------------------.
A. 0
B. NULL
C. 1
D. none of the above
Answer : B

3. Expression 4**3 evaluates to 64.
A. True
B. False
C.
D.
Answer : B

4. Which classes allow primitive types to be accessed as objects?
A. Storage
B. Virtual
C. Friend
D. Wrapper
Answer : B

5. Which of the following is allowed in a C Arithmetic instruction
A. []
B. {}
C. ()
D. None of the above
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. 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

8. The expression (i + j)++ is illegal.
A. True
B. False
C.
D.
Answer : A

9. /* The C language.
/* is a procedural language .*/*/
The above statement is valid.
A. True
B. False
C.
D.
Answer : B

10. The expression "int i = j = k = 0;" is invalid.
A. True
B. False
C.
D.
Answer : A

11. In the expression - 'x + y + 3z =20'
A. x + y' is a keyword
B. 3 and 20 are constants
C. 3z is a constant
D. y is a variable and z is a constant
Answer : B

12. 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

13. 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

14. 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

15. Structures within structures cannot be created.
A. True
B. False
C.
D.
Answer : B

16. = and = = have the same operation.
A. True
B. False
C.
D.
Answer : B

17. Which of the STL containers store the elements contiguously (in adjecent memory locations)?
A. std::vector
B. std::list
C. std::map
D. std::set
Answer : C

18. Which one of the following is not a valid reserved keyword in C++
A. Explicit
B. Public
C. Implicit
D. Private
Answer : C

19. Which among the following is a unconditional control structure
A. do-while
B. if-else
C. goto
D. for
Answer : C

20. Only one break can be used in one loop.
A. True
B. False
C.
D.
Answer : B

21. Which of the following keyword supports dynamic method resolution?
A. abstract
B. Virtual
C. Dynamic
D. Typeid
Answer : A

22. The output of the following code is:

main() 
{ 
unsigned int a = 10; 
while (a>=10) 
{ 
int a; a-- ; 
} 
printf("%i", a); 
}

A. Infinite loop
B. 9
C. 0
D. None
Answer : A

23. 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

24. All elements of a structure are allocated contiguous memory locations.
A. True
B. False
C.
D.
Answer : A

25. Right shifting an operand 1bit is equivalent to multiplying it by 2.
A. True
B. False
C.
D.
Answer : B

26. What is an array?
A. An array is a collection of variables that are of the dissimilar data type.
B. An array is a collection of variables that are of the same data type.
C. An array is not a collection of variables that are of the same data type.
D. None of the above.
Answer : B

27. strcat() function ----------------------- two strings.
A. delete
B. concatenate
C. compare
D. none of the above
Answer : B

28. enum helps to create user defined datatype.
A. True
B. False
C.
D.
Answer : A

29. Which one of the following is not a fundamental data type in C++
A. float
B. string
C. int
D. wchar_t
Answer : A

30. p++ executes faster than p + 1.
A. True
B. False
C.
D.
Answer : A

31. 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

32. The expression "b = 3 ^ 2;" will evaluate b = 9.
A. True
B. False
C.
D.
Answer : B

33. static variable will not always have assigned value.
A. True
B. False
C.
D.
Answer : A

34. perror( ) function used to ?
A. Work same as printf()
B. prints the error message specified by the compiler
C. prints the garbage value assigned by the compiler
D. None of the above
Answer : B

35. Which header file is essential for using strcmp() function?
A. string.h
B. strings.h
C. text.h
D. strcmp.h
Answer : A

36. What will be output if you will compile and execute the following c code?

#include 
int main(){    
int i=320;    
char *ptr=(char *)&i;    
printf("%d",*ptr);     
return 0; 
} 

A. 1
B. 64
C. 320
D. Compiler Error
Answer : B

37. The default initial value of automatic storage class is 0.
A. True
B. False
C.
D.
Answer : B

38. A multidimensional array A[10][9] can store-------- number of elements
A. 91
B. 88
C. 90
D. 89
Answer : C

39. && and & operators have the same meaning.
A. True
B. False
C.
D.
Answer : B

40. The expression 'int j = 6 + 3 % -9;' evaluates to -1.
A. True
B. False
C.
D.
Answer : B

41. 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

42. 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

43. 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

44. What's wrong? while( (i < 10) && (i > 24))
A. the logical operator && cannot be used in a test condition
B. the while loop is an exit-condition loop
C. the test condition is always true
D. the test condition is always false
Answer : D

45. 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

46. The-------------------- statement helps immediate exit from any part of the loop
A. break
B. continue
C. exit
D. All of the above
Answer : A

47. A recursive function calls itself again and again.
A. True
B. False
C.
D.
Answer : A

48. C programming language was developed by
A. Dennis Ritchie
B. Ken Thompson
C. Bill Gates
D. Peter Norton
Answer : A

49. void' is a datatype.
A. True
B. False
C.
D.
Answer : A

50. 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