Computer Getting Started with “C” Test Online

Mustansar KhanLast Updated: October 15, 2025

Important Computer Getting Started with “C” Question and Answer

Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Getting Started with “C” Practice Test Online With Explanation

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1. Which of the following operators is used to increment a variable by 1?

2. Which of the following is a relational operator?

3. What is the size of an int in C (typically on 32-bit systems)?

4 bytes

8 bytes

2 bytes

1 byte

4. Which of the following functions is the entry point of a C program?

start()

begin()

main()

init()

5. Which of the following is a valid data type in C?

number

int

integer

num

6. Which of the following is used to declare a constant in C?

#define

static

Both A and B

const

7. Which of the following is a valid identifier in C?

@count

2value

value_2

float

8. Which operator is used for assignment in C?

9. What will printf("%d", 10 + 20); output?

1020

10 + 20

Error

10. Which format specifier is used to print characters in C?

11. Which header file is used for mathematical functions like sqrt()?

stdlib.h

math.h

string.h

conio.h

12. Which of these is a looping statement in C?

switch

break

while

13. Which function is used to read a single character from the user?

getc()

getchar()

read()

input()

14. Which of the following data types can store real numbers?

float

long

char

int

15. Which symbol is used to indicate the end of a statement in C?

;

16. What is a syntax error?

Run-time error

Error after compilation

Error in logic

Mistake in program structure

17. What will the expression 10 / 3 return in C?

3.33

3.0

18. Which of the following loops executes at least once?

do-while

None

while

for

19. Which library function is used to calculate power in C?

sqrt()

exp()

pow()

power()

20. Which header file is needed to use printf() and scanf()?

math.h

stdlib.h

conio.h

stdio.h

21. Which operator is used to dereference a pointer?

22. Which of the following is used for string handling in C?

string.h

math.h

stdlib.h

conio.h

23. Which of the following is the correct syntax to define an array?

int arr(10);

array int arr[10];

int arr[10];

int arr[] = new int[10];

24. Which keyword is used to create a constant in C?

const

static

constant

define

25. Which format specifier is used for float values in C?

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26. Which data type is used to store a single character?

char

int

float

string

27. Which character is used to terminate a string in C?

NULL

28. What is the correct way to declare a pointer in C?

int *ptr;

int ptr;

int &ptr;

pointer int ptr;

29. Which of the following is not a valid C keyword?

return

mutable

auto

static

30. How do you include the standard I/O header in a C program?

include stdio

using stdio.h

#import stdio.h

#include

31. What is the use of the continue statement in loops?

End the program

Skip the current iteration

Restart the loop

Exit the loop

32. Which of the following is a correct extension for a C source file?

.py

.java

.cpp

33. What is the output of printf("%c", 65);?

Error

34. How do you declare a variable in C?

declare x;

variable x;

int x;

var x;

35. What does the keyword void indicate when used in a function?

The function is private

The function returns no value

The function has no parameters

The function returns a number

36. Which symbol is used for comments in C?

// or /* */

37. Which operator is used to compare two values for equality?

equals

38. Which keyword is used to exit a loop early?

break

return

stop

exit

39. What does the return statement do in a function?

Prints a message

Ends the program

Returns control to the caller

Loops the function

40. Which of the following is a correct function prototype?

int func();

int func;

func int();

declare func();

41. Which keyword is used to define a user-defined data type?

struct

typedef

new

define

42. Which keyword is used to define a function in C?

function

func

define

No keyword needed

43. What is the default return type of main() in C?

int

void

float

char

44. What is the result of 5 % 2 in C?

2.5

45. What is the result of sizeof(char) on most systems?

46. Which of the following is used to take input from the user?

scanf()

puts()

print()

echo()

47. Which escape sequence is used to insert a new line in C?

48. What is the correct syntax to output "Hello World" in C?

print("Hello World");

cout << "Hello World";

echo("Hello World");

printf("Hello World");

49. Which of the following is a logical operator in C?

50. Which symbol is used for the address-of operator in C?

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Mustansar KhanLast Updated: October 15, 2025

Important Computer Getting Started with “C” Question and Answer

Getting Started with “C” Practice Test Online With Explanation

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