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

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

int

string

char

float

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

int &ptr;

int *ptr;

pointer int ptr;

int ptr;

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

power()

exp()

sqrt()

pow()

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

define

function

No keyword needed

func

6. Which operator is used to dereference a pointer?

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

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

NULL

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

stdlib.h

string.h

math.h

conio.h

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

break

while

switch

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

2 bytes

8 bytes

1 byte

4 bytes

12. Which operator is used for assignment in C?

13. What is a syntax error?

Error after compilation

Run-time error

Error in logic

Mistake in program structure

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

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

for

do-while

None

while

16. Which symbol is used for comments in C?

// or /* */

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

stdlib.h

conio.h

math.h

stdio.h

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

echo("Hello World");

cout << "Hello World";

print("Hello World");

printf("Hello World");

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

break

exit

stop

return

20. Which of the following is a relational operator?

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

Error

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

typedef

new

define

struct

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

3.0

3.33

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

using stdio.h

#include

include stdio

#import stdio.h

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

float

int

char

void

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

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

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

.java

.cpp

.py

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

declare func();

func int();

int func();

int func;

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

static

define

const

constant

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

The function returns a number

The function is private

The function returns no value

The function has no parameters

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

return

auto

static

mutable

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

stdlib.h

math.h

conio.h

string.h

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

echo()

scanf()

puts()

print()

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

36. How do you declare a variable in C?

int x;

declare x;

variable x;

var x;

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

int

char

long

float

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

main()

begin()

start()

init()

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

;

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

Both A and B

static

#define

const

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

getc()

read()

input()

getchar()

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

value_2

2value

@count

float

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

2.5

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

num

integer

number

int

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

Returns control to the caller

Ends the program

Loops the function

Prints a message

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

int arr[] = new int[10];

int arr[10];

int arr(10);

array int arr[10];

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

equals

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

Restart the loop

Skip the current iteration

End the program

Exit the loop

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

10 + 20

1020

Error

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

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Mustansar KhanLast Updated: October 15, 2025

Computer Getting Started with “C” Test Online

Important Computer Getting Started with “C” Question and Answer

Getting Started with “C” Practice Test Online With Explanation

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