Discuss C++ Institute CPP Exam Topic 7 Question 86

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

#include

using namespace std;

int main () {

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

vector v (t,t+10);

vector::iterator it = v.begin();

while ( (it = adjacent_find (it, v.end())) != v.end()) {

cout<

}

cout<< endl;

return 0;

}

Aprogram outputs: 2 3

Bprogram outputs: 2 7

Cprogram outputs: 3 8

Dcompilation error

Eprogram will run forever

Suggested Answer: E

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41 comments · newest first

Leonie 11 months ago

Definitely not running forever, that's not how it works.

Franklyn 11 months ago

Surprised it doesn't throw a compilation error!

Nilsa 11 months ago

Wait, isn't there a mistake in the cout statement?

Alise 11 months ago

I think it should output 2 3.

Francoise 11 months ago

The code uses adjacent_find to find duplicates.

Lovetta 12 months ago

I feel like this code might run into an infinite loop because of how the iterator is being incremented.

Ashlee 12 months ago

I'm a bit confused about the `cout<

Adela 12 months ago

I remember practicing a similar question, and I think the output should be the indices of the first duplicates found in the vector.

Launa 1 year ago

I think the `adjacent_find` function will find the first pair of adjacent equal elements, but I'm not sure what the output will be.

Tasia 1 year ago

Alright, time to put my problem-solving skills to the test. I'll start by identifying the key components of the code and how they interact.

Kenneth 1 year ago

I've seen this type of problem before, so I think I know what the output will be. Let me double-check my understanding quickly.

Jules 1 year ago

Whoa, this is a lot of code to digest in an exam setting. I better take it slow and make sure I don't miss any important details.

Aretha 1 year ago

Okay, I think I understand what's happening here. Let me walk through it in my head before I write anything down.

Margret 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.

Scot 1 year ago

I think the Urgency of an Incident refers to how quickly it needs to be resolved, based on the impact it has on normal operations. Option A seems to capture that idea best.

Tenesha 1 year ago

I'm not entirely sure, but I remember something about IM being less formal than email. Does that mean conversations aren't considered records?

Beata 1 year ago

I think appropriate utilization might be less of a reason for carve-outs. It seems like they focus more on cost and patient definitions instead.

Dalene 1 year ago

I bet the correct answer is a compilation error. I mean, come on, who writes code like this? It's like a riddle wrapped in a mystery inside an enigma.

Gabriele 1 year ago

Hold on, is this the real life? Or is this just fantasy? I'm so confused, I think I need to go take a nap and come back to this question later.

Bethanie 1 year ago

↳ replying to Gabriele

User1: Thanks for the info, I'll check it out later.

Georgene 1 year ago

↳ replying to Gabriele

User3: The answer is B) program outputs: 2 7

Alishia 1 year ago

↳ replying to Gabriele

User2: Yeah, sometimes a nap can help clear your mind.

Huey 1 year ago

↳ replying to Gabriele

User1: Don't worry, just take a break and come back later.

Lea 1 year ago

Wait, is this a trick question? I'm pretty sure the program will run forever because the while loop never terminates. It's like an infinite loop of finding adjacent duplicates!

Mignon 1 year ago

↳ replying to Lea

E) program will run forever

Cassie 1 year ago

↳ replying to Lea

C) program outputs: 3 8

Kris 1 year ago

↳ replying to Lea

B) program outputs: 2 7

Lorean 1 year ago

↳ replying to Lea

A) program outputs: 2 3

Tawanna 1 year ago

I think the output will be 3 8, because the adjacent_find function will return the iterator pointing to the second pair of duplicates, which is the second 4 in the vector.

Matthew 1 year ago

↳ replying to Tawanna

D) compilation error

Cassi 1 year ago

↳ replying to Tawanna

C) program outputs: 3 8

Irma 1 year ago

↳ replying to Tawanna

B) program outputs: 2 7

Rosita 1 year ago

↳ replying to Tawanna

A) program outputs: 2 3

Julieta 2 years ago

I'm not sure, but I think the answer might be B) program outputs: 2 7 because the iterator is incremented by 1 each time.

Lashonda 2 years ago

I agree with Tiffiny, because the code uses adjacent_find to find the first occurrence of two adjacent elements that are equal.

Malcolm 2 years ago

The output will be 2 7, since the adjacent_find function will return the first iterator pointing to the first duplicate element, which is the second 3 in the vector.

Billy 1 year ago

↳ replying to Malcolm

D) compilation error

Terrilyn 1 year ago

↳ replying to Malcolm

C) program outputs: 3 8

Curt 1 year ago

↳ replying to Malcolm

B) program outputs: 2 7

Bobbie 1 year ago

↳ replying to Malcolm

A) program outputs: 2 3

Tiffiny 2 years ago

I think the correct answer is A) program outputs: 2 3.

C++ Institute CPP Exam - Topic 7 Question 86 Discussion