C++ Institute Exam CPP Topic 2 Question 73 Discussion

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

Question #: 73
Topic #: 2

[All CPP Questions]

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

#include

using namespace std;

void myfunction(int i) {

cout << " " << i;

}

bool classifier(int v) {

return v%2==0;

}

int main() {

int t[] = { 1, 5, 2, 5, 2, 4, 4, 3, 3, 1 };

vector v1(t, t+10);

set s1(t, t+10);

replace(v1.begin(), v1.end(),classifier, 10);

for_each(v1.begin(), v1.end(), myfunction);

return 0;

}

Program outputs:

A1 5 10 5 10 10 10 3 3 1

B1 5 2 5 2 4 4 3 3 1

Ccompilation error

D10 10 2 10 2 4 4 10 10 10

Show Suggested Answer

Suggested Answer: C

by Johnetta at Oct 16, 2023, 09:48 AM

Limited Time Offer

25%

Off

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

Contribute your Thoughts:

Submit Cancel

Nell

1 months ago

Whoa, hold on a second! If the replace function is using a predicate, then the answer should be D. The predicate function checks if the number is even, and the replace function replaces those even numbers with 10. So the output will be 10 5 2 5 2 4 4 3 3 10.

upvoted 0 times

Delmy

6 days ago

You're right, the output will be 10 5 2 5 2 4 4 3 3 10.

upvoted 0 times

...

Emile

7 days ago

Actually, I believe the correct answer is D.

upvoted 0 times

...

Juan

19 days ago

I think the answer is A.

upvoted 0 times

...

Man

1 months ago

Hold on, I think there's a catch here. The replace function takes a predicate function as its third argument, not a value to replace with. So this code won't even compile. The answer is C, compilation error.

upvoted 0 times

Janet

13 days ago

Yes, that's correct. The code won't compile because of the incorrect argument in the replace function.

upvoted 0 times

...

Muriel

16 days ago

Oh, so the correct answer is C) compilation error then.

upvoted 0 times

...

Asuncion

17 days ago

I think you're right, the code won't compile because the replace function is expecting a predicate function.

upvoted 0 times

...

Ozell

2 months ago

I'm pretty sure the answer is B. The replace function replaces the even numbers with 10, but it doesn't preserve the original order of the elements. So the output should be 1 10 2 5 2 4 4 3 3 10.

upvoted 0 times

...