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

break

exit

continue

return

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

do-while

repeat

while

for

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

Both B and C

while(i > 0)

while(1)

while(true)

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

Condition

All are optional

Increment

Initialization

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

while

do-while

for

None

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

while

All of the above

for

do-while

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

while

switch

do-while

for

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

Body

Initialization

Update

Condition

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

break

goto

exit

continue

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

do-while executes at least once

They are identical

while executes at least once

do-while checks condition first

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

while

do-while

for

goto

12. What is an infinite loop?

A loop that executes once

A loop that ends at zero

A loop that never terminates

A loop that runs conditionally

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

break

stop

continue

exit

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

Restarts the loop

Skips the next iteration

Exits the loop

Ends the program

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

hold()

sleep()

pause()

break()

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

break

continue

skip

exit

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

It always executes once

It runs infinitely

Condition is checked after execution

Condition is checked before each iteration

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

while

for

do-while

goto

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

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

All of the above

Increment

Condition

Initialization

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

Condition

Iteration

Execution

Initialization

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

Within the loop block only

File scope

Main function

Global

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

switch

do-while

while

for

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

for (init; increment; condition)

for (increment; condition; init)

for (init; condition; increment)

for (condition; init; increment)

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

while

do-while

switch

for

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

quit

stop

abort

exit()

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

All loops must have an exit condition

Only while loops can use break

Only for loops allow continue

Loops cannot be nested

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

for

switch

do-while

while

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

K&R C

C89

C99

C90

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

do-while

goto

for

while

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

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

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

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

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

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

Starts loop again

Exits from program

Ends the loop

Skips the rest of the loop for current iteration

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

Infinite loop

None

No increment

Missing semicolon

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

continue

jump

goto

None

35. Which condition will cause an infinite loop?

i = i + 1

true

i != 10

i > 10

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Mustansar KhanLast Updated: October 15, 2025

Important Computer Loop Constructs Question and Answer

Loop Constructs Practice Test Online With Explanation

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Study Plan for Computer Loop Constructs Test Online

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