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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.
Test Helpful For:	ECAT Entry Test Computer Online Test Interview Questions about Computer All Universities Entrance Test Recruitments Tests

ECAT Loop Constructs Test Online MCQs

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

for (init; condition; increment)

for (condition; init; increment)

for (increment; condition; init)

for (init; increment; condition)

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

while(i > 0)

Both B and C

while(true)

while(1)

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

for

do-while

repeat

while

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

All are optional

Condition

Increment

Initialization

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

Ends the program

Skips the next iteration

Restarts the loop

Exits the loop

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

continue

break

exit

skip

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

goto

break

continue

exit

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

while executes at least once

do-while executes at least once

do-while checks condition first

They are identical

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

do-while

for

None

while

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

Condition

Update

Body

Initialization

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

break

exit

return

continue

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

while

for

switch

do-while

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

It always executes once

Condition is checked after execution

Condition is checked before each iteration

It runs infinitely

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

exit

continue

stop

break

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

Missing semicolon

Infinite loop

None

No increment

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

sleep()

pause()

hold()

break()

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

Iteration

Initialization

Condition

Execution

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

File scope

Global

Within the loop block only

Main function

19. Which condition will cause an infinite loop?

i != 10

i = i + 1

i > 10

true

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

Ends the loop

Starts loop again

Skips the rest of the loop for current iteration

Exits from program

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

Only while loops can use break

Only for loops allow continue

All loops must have an exit condition

Loops cannot be nested

22. 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--)

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

while

for

do-while

switch

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

do-while

for

goto

while

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

jump

continue

None

goto

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

exit()

quit

abort

stop

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

do-while

while

goto

for

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

while

do-while

switch

for

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

K&R C

C90

C99

C89

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

Initialization

Condition

All of the above

Increment

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

while

do-while

All of the above

for

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

do-while

while

switch

for

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

for

goto

do-while

while

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

35. 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

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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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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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