Oracle Exam 1Z0-149 Topic 4 Question 29 Discussion

Actual exam question for Oracle's 1Z0-149 exam

Question #: 29
Topic #: 4

[All 1Z0-149 Questions]

Which is true about counter variables in a FOR loop?

AIt must explicitly be declared.

BIt can be modified in the body of the loop.

CIt cannot be NULL.

DIt is accessible outside the body of the loop.

Show Suggested Answer

Suggested Answer: C

by Lili at Jun 20, 2024, 02:24 AM

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Nicholle

5 months ago

I think D) It is accessible outside the body of the loop is false, as the scope of the counter variable is limited to the loop.

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Thersa

5 months ago

I believe A) It must explicitly be declared is also true, as we need to initialize the counter variable.

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Gregoria

5 months ago

I agree with Erick, the counter variable can be changed within the loop.

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Erick

5 months ago

I think B) It can be modified in the body of the loop is true.

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Carisa

5 months ago

Haha, the counter variable is like my age - it's always changing in the loop, but I can never be NULL!

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Marvel

4 months ago

Yes, the counter variable can be modified in the body of the loop.

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Marvel

5 months ago

That's a good analogy! The counter variable definitely changes in the loop.

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Fatima

6 months ago

I think C is also true. The counter variable can't be NULL, it needs to have a valid value for the loop to work properly.

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Keneth

5 months ago

Yes, it needs to have a valid value for the loop to function correctly.

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Adelle

5 months ago

I agree, the counter variable cannot be NULL.

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Amie

6 months ago

I'd say A and D are true. The counter variable has to be declared explicitly, and it's accessible outside the loop too.

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Tennie

6 months ago

B is the correct answer. I've used counter variables in FOR loops many times, and I can definitely modify them in the loop body.

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Jarvis

5 months ago

I find it helpful that we can change the counter variable in the loop.

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Shad

5 months ago

Yes, it's convenient to be able to modify the counter variable within the loop.

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Lezlie

5 months ago

I agree, I always modify my counter variables in the loop body.

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