C++ Institute Exam CPP Topic 5 Question 83 Discussion

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

Question #: 83
Topic #: 5

[All CPP Questions]

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

#include

using namespace std;

void print(int v) { cout<

struct Sequence {

int start;

Sequence(int start):start(start){}

int operator()() {

return 10*(1+(start++ %3));

}

};

int main() {

vector v1(10);

generate_n(v1.begin(), 10, Sequence(1));

remove(v1.begin(), v1.end(), 10);

for_each(v1.begin(), v1.end(), print);cout<

return 0;

}

Program outputs:

A20 30 10 20 30 10 20 30 10 20

B20 30 20 30 20 30 20

C20 30 20 30 20 30 20 30 10 20

Dcompilation error

Show Suggested Answer

Suggested Answer: C

by Tammi at Apr 28, 2024, 12:04 AM

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Kristeen

10 months ago

Hmm, valid point Eve, 'remove' here doesn't shrink the vector. C might still be correct.

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Ettie

10 months ago

I feel like it could be D since 'remove' might not work correctly here.

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Maynard

10 months ago

Good point, Maybe that's why Option B could make sense.

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Rodolfo

10 months ago

But doesn't 'remove' modify the sequence? Might break the expected output.

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Polly

10 months ago

I think the answer is C. The sequence seems to increment and wrap.

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Mabel

11 months ago

I'm not sure about this question. Seems tricky.

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