C++ Institute Exam CPP Topic 2 Question 102 Discussion

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

Question #: 102
Topic #: 2

[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 Rosenda at Jan 13, 2025, 07:08 PM

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Delisa

1 months ago

The output is going to be 20 30 20 30 20 30 20 30 10 20. It's like a secret dance the numbers are doing, and we're just watching in awe.

upvoted 0 times

Socorro

7 days ago

Yeah, the code removes the number 10 from the vector, so it makes sense that it's not in the output.

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Socorro

13 days ago

That's interesting! I thought it would be A) 20 30 10 20 30 10 20 30 10 20.

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Socorro

18 days ago

B) 20 30 20 30 20 30 20

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Julene

2 months ago

Wow, this code is really something! I bet the developer was having a fun time coming up with this one. It's like a secret code that only the true C++ masters can crack.

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Tasia

2 months ago

This code is going to print 20 30 10 20 30 10 20 30 10 20. The `Sequence` class generates a sequence of 10, 20, and 30, and the `remove` function removes the 10s.

upvoted 0 times

Antonio

28 days ago

User2

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Patti

1 months ago

User1

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Emelda

2 months ago

I think the code will result in a compilation error. The `generate_n` function expects a function object, but the `Sequence` struct has a member function `operator()` instead.

upvoted 0 times