C++ Institute Exam CPP Topic 7 Question 89 Discussion

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

Question #: 89
Topic #: 7

[All CPP Questions]

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

#include

using namespace std;

templatestruct Out {

ostream & out;

Out(ostream & o): out(o){}

void operator() (const T & val ) { out<

struct Add {

int operator()(int & a, int & b) {

return a+b;

}

};

int main() {

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

vector v1(t, t+10);

vector v2(10);

transform(v1.begin(), v1.end(), v2.begin(), bind1st(1,Add()));

for_each(v2.rbegin(), v2.rend(), Out(cout));cout<

return 0;

}

Program outputs:

A1 2 3 4 5 6 7 8 9 10

B2 3 4 5 6 7 8 9 10 11

C10 9 8 7 6 5 4 3 2 1

D11 10 9 8 7 6 5 4 3 2

Ecompilation error

Show Suggested Answer

Suggested Answer: E

by Felicitas at Jul 11, 2024, 06:34 AM

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Evette

4 months ago

This is too easy! Clearly the answer is B. Who needs to read code when you can just guess the right answer?

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Melissa

4 months ago

Ah, I see what's going on here. The code is using a cusLeslie functor to add 1 to each element, so the answer must be B.

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Lore

3 months ago

Yes, the code adds 1 to each element, so the output should be 2 3 4 5 6 7 8 9 10 11.

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Lore

4 months ago

I think the answer is B.

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Miesha

4 months ago

I'm not sure about this one. The code looks a bit complex, but I'll go with option D just to be different.

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Leslie

4 months ago

Ha! I bet the answer is C. Reversing the vector and printing it out seems like the obvious solution here.

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Fletcher

3 months ago

I agree with you, it's E. There seems to be a compilation error with the bind1st function.

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Mammie

3 months ago

I think it might be D.

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Mabel

3 months ago

I'm going with C.

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Fletcher

4 months ago

No way, it's definitely B. The Add function is adding 1 to each element in the vector.

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Cecil

4 months ago

I believe it's B.

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Fletcher

4 months ago

I think it's actually D. The code seems to be adding elements in reverse order.

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Yan

4 months ago

I think the answer is A.

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Isaiah

4 months ago

I think the answer is D) 11 10 9 8 7 6 5 4 3 2

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Patrick

5 months ago

Hmm, this looks like a tricky one. I'm going to guess option B, since the question mentions that we're trying to add 1 to each element of the vector.

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Beata

4 months ago

Let's see the correct answer.

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Shawnee

4 months ago

I agree with User1, I also think it's B.

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Dorian

4 months ago

I'm not sure, but I think it might be E.

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Azzie

5 months ago

I think the answer is B.

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Latonia

5 months ago

I'm not sure, but I think the correct answer is A) 1 2 3 4 5 6 7 8 9 10

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Olive

5 months ago

I disagree, I believe the answer is E) compilation error

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Lashonda

5 months ago

I think the answer is B) 2 3 4 5 6 7 8 9 10 11

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