Oracle Exam 1Z0-149 Topic 12 Question 24 Discussion

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

Question #: 24
Topic #: 12

[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 Carin at Apr 21, 2024, 05:14 PM

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Jenifer

6 months ago

It's confusing. I think I'll go with B. It sounds logical.

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Leota

7 months ago

Isn't it obvious that D is wrong? Usually, counter variables are not accessible outside the loop.

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Mozell

7 months ago

I read somewhere that they aren't usually NULL, so maybe C is correct.

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Romana

7 months ago

I feel uneasy about this one. Don't counter variables need to be declared like A suggests?

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Chantell

7 months ago

Not sure. I think it must be B, as counter variables can be updated inside the loop.

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Jenifer

7 months ago

What do you think about the question on counter variables in a FOR loop?

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Essie

8 months ago

That's correct. It must hold a valid value.

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Phung

8 months ago

But it can't be NULL, right?

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Rolland

8 months ago

And you can definitely modify it within the loop.

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Broderick

8 months ago

Yes, that's correct. It's usually initialized before the loop.

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Essie

8 months ago

I think the counter variable must be explicitly declared.

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