+SoLvEd+ How to remove wrong approved quiz?

Question

I have posted a quiz and now I believed my answer is not entirely correct.

The breakdown :
https://code.sololearn.com/cJ4rXBsdnwQs/?ref=app

Thanks Omkar for bringing this issue into my attention :
https://www.sololearn.com/post/80809/?ref=app

Answer 1

Contact [e-mail]. I mean, you did answer to this question, but I guess your answer applied to quizzes which haven't been accepted yet?

https://www.sololearn.com/Discuss/1712971/?ref=app

Answer 2

It only initializes the array to 0's if it's static or thread storage or use a {} that is smaller than the array itself, which it is neither in the quiz's case.

Answer 3

int a[10]; // a contains garbage
static int a[10]; // static storage, a is all 0's
int a[10]{}; // aggregate initialization, a is all 0's
int a[10]{ 1,2,3 }; // same as previous, first 3 elements are 1, 2 and 3 and the rest is initialized with 0's

thread_local int a[10]; // thread storage, a is all 0's. This is C++ though, not sure the C equivalent.

Answer 4

Hatsy Rei

It is an approved quiz.

Thanks for your answer. I will write to sololearn now.

Answer 5

Gordon this is what Dennis means https://code.sololearn.com/ctfGEo31xb2a/?ref=app

Answer 6

~ swim ~
I think if you do {} on an aggregate type it's an aggregate initialization, like with int a[10]{};

list initialization is I think for those types that take an std::initializer_list in it's constructor.
Don't quote me on that, I'm not sure either.

Confusing for sure, but the C++ standard mentions aggregate initialization "N4594 § 8.5.1 [dcl.init.aggr]".
I know it's not C but it's probably the same there.

Answer 7

Calviղ

At step of 3,
The array a is not initialized at a[8],

it must have displayed 0 when I submitted the quiz. However, it is displaying junk values on my device now.

While the key of non assignment is demonstrated, unstable result is wrong result.

Answer 8

~ swim ~
What does "in global scope" mean?

Answer 9

~ swim ~ it works too~ wow~ 👏👏👏

Answer 10

Only for non standard C, it would not initialise unassigned values.

So with C standard, your quiz is still correct.

Answer 11

Calviղ I see 36 printed in my code snippet, so sololearn C is non standard C?

Answer 12

Dennis

Can you kindly furnish us with an example for static, thread storage and using {} respectively?

Answer 13

What's wrong? I think it's a correct answer.

Answer 14

According to this https://stackoverflow.com/a/32708288
C standard would initialise all unassigned arithmetic values to zeros.

Answer 15

Dennis you're right.