What happens when you attempt to compile and run the following code?#include #include #include #include using namespace std;void myfunction(int i) {cout

Discuss C++ Institute CPP Exam Topic 2 Question 73

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

Suggested Answer: C

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33 comments · newest first

Wilburn 11 months ago

Nah, it should just print the original array.

Twila 11 months ago

I’m surprised it doesn’t throw an error!

Amie 11 months ago

Wait, is `replace` even used correctly here?

Christoper 11 months ago

I think it outputs option A.

Jesse 11 months ago

Looks like it should compile fine.

Aja 12 months ago

I think the output will be option A because it seems like the even numbers will get replaced by 10, but I'm not completely confident.

Victor 12 months ago

I feel like this code should compile fine, but I'm worried about the output since `classifier` returns a boolean.

Edwin 1 year ago

I remember practicing a similar question where we used `replace_if`, but I can't recall if it was the same as this one.

Nadine 1 year ago

I think the `replace` function is supposed to replace elements based on a predicate, but I'm not sure if it works with a function like `classifier`.

Devon 1 year ago

Ah, I see it now. The `replace()` function is modifying the vector `v1` in-place, so the output reflects the changes made to the vector. This is a good example of how to use the standard library functions effectively.

Cordell 1 year ago

Wait, I'm a bit confused. Why is the output different from the original vector? I need to double-check how the `replace()` function works.

Mabel 1 year ago

Okay, I think I've got this. The `replace()` function is replacing the elements in `v1` that satisfy the `classifier` function with the value `10`. Let me work through the output.

Kandis 1 year ago

Hmm, this looks like a tricky one. I'll need to carefully read through the code and think through the logic step-by-step.

Kallie 1 year ago

Hmm, not sure about this one. I'll have to think through the different factors the firm might have considered in making this decision. The key is figuring out which reason is the most likely.

Izetta 1 year ago

Okay, I think I've got this. The default scope for Spring beans is singleton, so there should only be one AccountRepository bean instantiated, regardless of how many times the method is called. I'll go with option A.

Terry 1 year ago

I remember reading that handling brute force attacks requires immediate action, but I'm not sure if updating passwords is the only step we should take.

Nell 1 year 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.

Delmy 1 year ago

↳ replying to Nell

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

Emile 1 year ago

↳ replying to Nell

Actually, I believe the correct answer is D.

Juan 1 year ago

↳ replying to Nell

I think the answer is A.

Man 1 year 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.

Janet 1 year ago

↳ replying to Man

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

Muriel 1 year ago

↳ replying to Man

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

Asuncion 1 year ago

↳ replying to Man

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

Ozell 1 year 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.

Janna 2 years ago

I'm not sure, but I think there might be a compilation error.

Meghann 2 years ago

The output should be D. The replace function replaces all even numbers with 10, so the output should be 10 5 2 5 2 4 4 3 3 10.

Ollie 1 year ago

↳ replying to Meghann

D) 10 5 2 5 2 4 4 3 3 10

Nana 1 year ago

↳ replying to Meghann

C) compilation error

Jess 1 year ago

↳ replying to Meghann

B) 1 10 2 5 2 4 4 3 3 10

Colette 1 year ago

↳ replying to Meghann

A) 10 5 2 5 2 4 4 3 3 1

Gianna 2 years ago

I believe it will output D.

Janna 2 years ago

I think the answer is B.

C++ Institute CPP Exam - Topic 2 Question 73 Discussion