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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 condition will cause an infinite loop?

true

i != 10

i > 10

i = i + 1

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

for

None

while

do-while

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

continue

None

goto

jump

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

C99

K&R C

C89

C90

5. What is an infinite loop?

A loop that ends at zero

A loop that runs conditionally

A loop that executes once

A loop that never terminates

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

while

for

do-while

goto

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

continue

skip

break

exit

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

Condition

Initialization

Increment

All are optional

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

while

do-while

for

goto

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

do-while

for

goto

while

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

pause()

sleep()

break()

hold()

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

do-while

switch

for

while

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

for

do-while

switch

while

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

exit()

stop

quit

abort

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

for

do-while

repeat

while

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

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

switch

while

for

do-while

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

do-while checks condition first

They are identical

do-while executes at least once

while executes at least once

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

while(1)

while(i > 0)

while(true)

Both B and C

20. 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--)

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

Loops cannot be nested

Only while loops can use break

All loops must have an exit condition

Only for loops allow continue

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

Global

File scope

Main function

Within the loop block only

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

Iteration

Execution

Condition

Initialization

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

exit

return

break

continue

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

exit

continue

break

stop

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

Exits the loop

Restarts the loop

Ends the program

Skips the next iteration

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

Starts loop again

Skips the rest of the loop for current iteration

Exits from program

Ends the loop

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

break

exit

goto

continue

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

Condition

Increment

All of the above

Initialization

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

No increment

Infinite loop

Missing semicolon

None

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

Condition is checked before each iteration

Condition is checked after execution

It always executes once

It runs infinitely

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

do-while

for

All of the above

while

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

Condition

Body

Initialization

Update

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

while

switch

do-while

for

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

for (condition; init; increment)

for (increment; condition; init)

for (init; condition; increment)

for (init; increment; condition)

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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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