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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 these can result in a compile-time error in a loop?

Missing semicolon

No increment

None

Infinite loop

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

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

for (increment; condition; init)

for (init; condition; increment)

for (condition; init; increment)

for (init; increment; condition)

4. What is an infinite loop?

A loop that never terminates

A loop that ends at zero

A loop that runs conditionally

A loop that executes once

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

Condition

All of the above

Initialization

Increment

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

sleep()

hold()

pause()

break()

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

continue

break

exit

stop

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

switch

do-while

while

for

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

stop

quit

exit()

abort

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

Ends the program

Exits the loop

Skips the next iteration

Restarts the loop

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

do-while

goto

for

while

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

Condition

Update

Initialization

Body

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

skip

break

exit

continue

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

do-while

while

goto

for

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

while

goto

for

do-while

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

while(1)

while(true)

Both B and C

while(i > 0)

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

exit

continue

goto

break

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

do-while

while

for

repeat

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

for

None

while

do-while

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

jump

goto

None

continue

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

Execution

Condition

Initialization

Iteration

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

do-while

for

switch

while

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

Exits from program

Starts loop again

Skips the rest of the loop for current iteration

Ends the loop

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

while executes at least once

do-while checks condition first

do-while executes at least once

They are identical

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

while

switch

for

do-while

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

Increment

Condition

Initialization

All are optional

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

C99

K&R C

C90

C89

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

exit

continue

return

break

29. Which condition will cause an infinite loop?

true

i = i + 1

i > 10

i != 10

30. 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--)

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

Main function

Global

Within the loop block only

File scope

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

All of the above

while

for

do-while

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

Only while loops can use break

Loops cannot be nested

All loops must have an exit condition

Only for loops allow continue

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

do-while

for

while

switch

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

It runs infinitely

It always executes once

Condition is checked before each iteration

Condition is checked after execution

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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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