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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 function can be used to delay loop execution?

hold()

sleep()

break()

pause()

2. 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)

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

for

do-while

while

repeat

4. 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--)

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

do-while

goto

for

while

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

Both B and C

while(1)

while(true)

while(i > 0)

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

do-while checks condition first

do-while executes at least once

while executes at least once

They are identical

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

skip

exit

continue

break

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

Initialization

Iteration

Execution

Condition

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

K&R C

C90

C99

C89

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

Condition

Initialization

All are optional

Increment

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

All of the above

Condition

Increment

Initialization

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

return

break

continue

exit

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

for

goto

while

do-while

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

Loops cannot be nested

All loops must have an exit condition

Only while loops can use break

Only for loops allow continue

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

switch

for

do-while

while

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

exit()

quit

abort

stop

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

do-while

while

for

switch

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

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

Body

Condition

Update

Initialization

21. Which condition will cause an infinite loop?

true

i != 10

i > 10

i = i + 1

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

while

for

All of the above

do-while

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

Missing semicolon

None

No increment

Infinite loop

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

continue

goto

jump

None

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

None

do-while

for

while

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

Exits from program

Skips the rest of the loop for current iteration

Ends the loop

Starts loop again

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

Exits the loop

Skips the next iteration

Ends the program

Restarts the loop

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

for

while

do-while

switch

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

for

goto

while

do-while

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

continue

break

stop

exit

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

Main function

File scope

Within the loop block only

Global

32. What is an infinite loop?

A loop that runs conditionally

A loop that never terminates

A loop that executes once

A loop that ends at zero

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

switch

while

for

do-while

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

goto

continue

exit

break

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

It runs infinitely

It always executes once

Condition is checked after execution

Condition is checked before each iteration

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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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