C++ Institute Exam CPP Topic 2 Question 99 Discussion

Actual exam question for C++ Institute's CPP exam

Question #: 99
Topic #: 2

[All CPP Questions]

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

#include

int main ()

{

std::vectorv1;

for(int i = 10; i>0; i??)

{

v1.push_back(i);

}

std::vector::iterator it = v1.begin();

int sum = 0;

while(it != v1.end())

{

sum+=it++;

}

std::cout<<*v1.erase(v1.begin(),v1.end()?3)<<" "<

return 0;

}

Aprogram outputs 3 55

Bcompilation error

Cprogram outputs 3 45

Dprogram outputs 7 55

Show Suggested Answer

Suggested Answer: E

by Casie at Oct 21, 2024, 10:16 PM

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Eun

5 days ago

The program will output 3 55. The erase function returns an iterator to the element after the last element removed, and we're dereference that iterator to get the value 3.

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Margret

7 days ago

The code will have a compilation error. You can't iterate over a vector and erase elements at the same time, it will cause undefined behavior.

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Lavina

18 days ago

I believe the program will output B) compilation error because of the syntax error in the code.

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Dorinda

21 days ago

I agree with Telma, there seems to be an issue with the code.

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Telma

25 days ago

I think the answer is B) compilation error.

upvoted 0 times

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