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Computer Loop Constructs Test Online

Mustansar KhanLast Updated: October 15, 2025

Start your preparation for Computer Loop Constructs Test Online. This online test contains important MCQs from past papers. Attempting this test will help you prepare for Annual Exams and Entry Tests. Read the questions carefully and select the correct option below to see your result.

Important Computer Loop Constructs Question and Answer

Total Questions:	35
Time Allowed:	20 Minutes
Total Marks:	35
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	ECAT Entry Test Computer Online Test Interview Questions about Computer All Universities Entrance Test Recruitments Tests

Loop Constructs Practice Test Online With Explanation

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1. What does the break statement do in a loop?

Ends the program

Skips the next iteration

Restarts the loop

Exits the loop

2. Which keyword is used to terminate the program from inside a loop?

exit()

abort

stop

quit

3. Which loop type is preferred when the number of iterations is known?

while

for

do-while

goto

4. Which of the following statements can be used to exit a loop?

exit

break

continue

return

5. Which loop is most commonly used in iterating arrays?

switch

while

for

do-while

6. What is the default step size in a for loop?

7. Which loop is guaranteed to execute at least once?

for

do-while

All of the above

while

8. In a for loop, which part is optional?

All of the above

Condition

Increment

Initialization

9. Which loop is more suitable when checking the condition at the beginning is necessary?

switch

do-while

for

while

10. Which part of a for loop is executed only once?

Update

Body

Initialization

Condition

11. Which of the following is true about the while loop?

Condition is checked after execution

It always executes once

It runs infinitely

Condition is checked before each iteration

12. Which condition will cause an infinite loop?

i = i + 1

i != 10

true

i > 10

13. Which of the following is not a loop construct in C?

repeat

while

do-while

for

14. Which of the following loops allows execution after the condition check?

while

do-while

for

None

15. Which of these can result in a compile-time error in a loop?

Infinite loop

Missing semicolon

No increment

None

16. Which of the following is a valid loop control structure?

continue

goto

jump

None

17. Which of the following statements about loops is true?

Only for loops allow continue

All loops must have an exit condition

Only while loops can use break

Loops cannot be nested

18. Which of the following is an infinite while loop?

while(i > 0)

Both B and C

while(true)

while(1)

19. What is the initial value of a loop variable called?

Initialization

Execution

Iteration

Condition

20. Which of the following is the syntax of a for loop?

for (condition; init; increment)

for (increment; condition; init)

for (init; increment; condition)

for (init; condition; increment)

21. Which keyword is used to skip the rest of the loop body and continue with the next iteration?

exit

continue

break

goto

22. Which keyword skips the current iteration and proceeds to the next?

exit

break

skip

continue

23. Which of the following is the correct way to create a reverse loop?

for (i = n; i >= 0; i--)

for (i = n; i > 0; i++)

for (i = 0; i < n; i--)

for (i = n; i <= 0; i--)

24. Which control statement can be used inside any loop to force termination?

exit

break

stop

continue

25. What is the main difference between while and do-while?

They are identical

do-while checks condition first

do-while executes at least once

while executes at least once

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26. Which loop allows declaration like this: for (int i = 0; ...)?

C89

C99

K&R C

C90

27. Which of the following loops uses a post-test condition?

for

do-while

goto

while

28. What is the purpose of the continue statement in a for loop?

Ends the loop

Starts loop again

Exits from program

Skips the rest of the loop for current iteration

29. Which function can be used to delay loop execution?

sleep()

break()

pause()

hold()

30. What is an infinite loop?

A loop that runs conditionally

A loop that executes once

A loop that ends at zero

A loop that never terminates

31. Which loop structure is preferred when input is taken repeatedly until a condition is met?

for

do-while

switch

while

32. Which loop is best when exit depends on user input?

do-while

switch

for

while

33. What is the scope of a loop variable declared inside a for loop?

Within the loop block only

File scope

Global

Main function

34. Which of the following is not necessary in a for loop?

All are optional

Condition

Initialization

Increment

35. Which loop is best suited for menu-driven programs?

while

do-while

for

goto

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