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ECAT Computer Loop Constructs Test Online

Mustansar KhanLast Updated: May 1, 2025

ECAT Computer Science Loop Constructs Test

ECAT Computer Science Chapter 22 Loop Constructs Online Test

Total Questions:	35
Time Allowed:	20 Minutes
Total Marks:	35
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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ECAT Loop Constructs Test Online MCQs

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

All are optional

Condition

Increment

Initialization

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

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

goto

do-while

for

while

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

while

for

goto

do-while

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

Ends the program

Restarts the loop

Skips the next iteration

Exits the loop

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

All of the above

while

for

do-while

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

None

for

while

do-while

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

Within the loop block only

Main function

Global

File scope

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

Ends the loop

Starts loop again

Exits from program

Skips the rest of the loop for current iteration

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

do-while executes at least once

while executes at least once

They are identical

do-while checks condition first

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

None

goto

continue

jump

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

switch

do-while

while

for

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

do-while

while

for

repeat

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

switch

do-while

while

for

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

break

exit

continue

stop

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

Initialization

Condition

Execution

Iteration

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

for (init; increment; condition)

for (increment; condition; init)

for (condition; init; increment)

for (init; condition; increment)

18. What is an infinite loop?

A loop that runs conditionally

A loop that ends at zero

A loop that executes once

A loop that never terminates

19. 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 = n; i <= 0; i--)

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

20. 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

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

Increment

Initialization

All of the above

Condition

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

break()

hold()

pause()

sleep()

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

continue

break

return

exit

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

abort

stop

exit()

quit

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

All loops must have an exit condition

Loops cannot be nested

Only while loops can use break

Only for loops allow continue

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

C90

C89

C99

K&R C

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

do-while

for

while

goto

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

Initialization

Update

Condition

Body

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

Missing semicolon

Infinite loop

None

No increment

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

goto

continue

break

exit

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

do-while

while

for

switch

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

switch

for

do-while

while

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

Both B and C

while(i > 0)

while(1)

while(true)

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

exit

break

continue

skip

35. Which condition will cause an infinite loop?

true

i != 10

i = i + 1

i > 10

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Mustansar KhanLast Updated: May 1, 2025

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ECAT Computer Loop Constructs Test Online

ECAT Computer Science Loop Constructs Test

ECAT Computer Science Chapter 22 Loop Constructs Online Test

ECAT Loop Constructs Test Online MCQs

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Mustansar Khan

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ECAT Computer Science Loop Constructs Test

ECAT Computer Science Chapter 22 Loop Constructs Online Test

ECAT Loop Constructs Test Online MCQs

Uncategorized

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Mustansar Khan

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