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C++ Institute CPP Exam - Topic 4 Question 122 Discussion

What happens when you attempt to compile and run the following code?#include #include #include #include #include using namespace std;int main(){int t[] ={ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};deque mydeck(t, t+10);list mylist(t,t+10);queue first;queue second(mydeck);queue third(second);queue fourth(mylist);mylist.clear();third.clear();cout
E) compilation error
A) program outputs: 10 0 10 0
B) program outputs: 0 0 0 0
C) program outputs: 10 10 10 10
D) program outputs: 10 0 0 10

C++ Institute CPP Exam - Topic 4 Question 122 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 122
Topic #: 4
[All CPP Questions]

What happens when you attempt to compile and run the following code?

#include

#include

#include

#include

#include

using namespace std;

int main()

{

int t[] ={ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

deque mydeck(t, t+10);list mylist(t,t+10);

queue first;

queue second(mydeck);

queue third(second);

queue > fourth(mylist);

mylist.clear();third.clear();

cout<

cout<

return 0;

}

Show Suggested Answer Hide Answer
Suggested Answer: E

by Desmond at May 05, 2026, 02:09 AM

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Francisca
2 days ago
I doubt it’s a compilation error. All includes are fine.
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Chantell
7 days ago
I feel like it could be a trick question.
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Lezlie
12 days ago
Exactly! So, option A makes sense.
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Valentin
17 days ago
But mylist is cleared, so it should show 0.
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Georgeanna
22 days ago
Yeah, because third is a copy of second, which has 10 elements.
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Johnetta
28 days ago
I think it outputs 10 0.
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Suzan
1 month ago
Compilation error seems unlikely; all syntax looks fine.
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Frankie
1 month ago
I feel confident about option A too.
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Lynna
1 month ago
No, fourth is initialized before mylist is cleared. It should still show 10.
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Yuriko
2 months ago
What if it’s option D? Mylist is cleared but fourth is based on it.
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Leila
2 months ago
I agree, option A makes sense.
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Serita
2 months ago
Mylist is cleared, so it should show 0.
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Lilli
2 months ago
Yeah, because third is a copy of second, which has 10 elements.
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Gracie
2 months ago
I think it outputs 10 0.
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Hui
2 months ago
Definitely not a compilation error, it runs fine!
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Stephaine
3 months ago
Is there a compilation error? Seems odd.
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Maile
3 months ago
Wait, why does mydeck size become 0?
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Norah
3 months ago
I think it should be 10 0, 10 0.
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Albert
3 months ago
Looks like it outputs 10 0, 0 10.
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Reita
3 months ago
I’m not entirely sure, but I think the output could be option D since `third` is a copy of `second`, and `mylist` is cleared.
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Laurene
5 months ago
I practiced a similar question where clearing a container affected the size. I feel like the output might be option A, but I can't recall exactly.
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Margurite
5 months ago
I remember something about queues and how they manage their size. I think `third.size()` should return 10, but I'm confused about `mylist.size()` after clearing it.
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Shanda
5 months ago
I think the program should compile fine since all the includes are correct, but I'm not sure about the output.
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