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

Limited Time Offer

25%

Off

Get Premium CPP Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Evette

3 months ago

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

upvoted 0 times

...

Melissa

3 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.

upvoted 0 times

Lore

2 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.

upvoted 0 times

...

Lore

3 months ago

I think the answer is B.

upvoted 0 times

...

Miesha

3 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.

upvoted 0 times

...

Leslie

3 months ago

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

upvoted 0 times

Fletcher

2 months ago

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

upvoted 0 times

...

Mammie

2 months ago

I think it might be D.

upvoted 0 times

...

Mabel

2 months ago

I'm going with C.

upvoted 0 times

...

Fletcher

3 months ago

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

upvoted 0 times

...

Cecil

3 months ago

I believe it's B.

upvoted 0 times

...

Fletcher

3 months ago

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

upvoted 0 times

...

Yan

3 months ago

I think the answer is A.

upvoted 0 times

...

Isaiah

3 months ago

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

upvoted 0 times

...

Patrick

4 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.

upvoted 0 times

Beata

3 months ago

Let's see the correct answer.

upvoted 0 times

...

Shawnee

3 months ago

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

upvoted 0 times

...

Dorian

3 months ago

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

upvoted 0 times

...

Azzie

4 months ago

I think the answer is B.

upvoted 0 times

...

Latonia

4 months ago

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

upvoted 0 times

...

Olive

4 months ago

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

upvoted 0 times

...

Lashonda

4 months ago

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

upvoted 0 times

...