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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?

exit

return

continue

break

2. 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

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

Condition

Body

Update

Initialization

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

jump

goto

continue

None

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

for

while

switch

do-while

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

It runs infinitely

Condition is checked after execution

It always executes once

Condition is checked before each iteration

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

Only while loops can use break

Only for loops allow continue

Loops cannot be nested

All loops must have an exit condition

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

while(i > 0)

while(true)

while(1)

Both B and C

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

do-while

while

repeat

for

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

None

No increment

Infinite loop

Missing semicolon

11. 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++)

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

All are optional

Increment

Condition

Initialization

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

File scope

Global

Main function

Within the loop block only

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

do-while

for

switch

while

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

for

goto

while

do-while

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

for

switch

do-while

while

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

goto

while

for

do-while

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

K&R C

C99

C89

C90

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

do-while

for

while

All of the above

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

do-while checks condition first

They are identical

while executes at least once

do-while executes at least once

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

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

for

switch

while

do-while

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

for

do-while

None

while

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

break

exit

continue

goto

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

Execution

Initialization

Iteration

Condition

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

goto

while

do-while

for

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

stop

continue

exit

break

28. Which condition will cause an infinite loop?

i != 10

true

i = i + 1

i > 10

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

Initialization

All of the above

Condition

Increment

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

sleep()

break()

hold()

pause()

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

Skips the rest of the loop for current iteration

Ends the loop

Exits from program

Starts loop again

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

exit()

abort

stop

quit

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

for (init; condition; increment)

for (increment; condition; init)

for (init; increment; condition)

for (condition; init; increment)

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

Ends the program

Restarts the loop

Exits the loop

Skips the next iteration

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

break

continue

exit

skip

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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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