C++ Institute CPP Exam - Topic 2 Question 51 Discussion

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

Question #: 51
Topic #: 2

[All CPP Questions]

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

#include

using namespace std;

class B { int val;

public:

B(int v):val(v){}

int getV() const {return val;} bool operator > (const B & v) const { return val>v.val;} };

ostream & operator <<(ostream & out, const B & v) { out<

templatestruct Out {

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

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

int main() {

int t[]={20, 30, 10, 20, 30, 10, 20, 30, 10, 20};

deque d1(t, t+10);

sort(d1.begin(), d1.end(), greater());

pair ::iterator, deque::iterator > result = equal_range(d1.begin(), d1.end(), B(20),

greater());

for_each(result.first, result.second, Out(cout));cout<

return 0;

}

Program outputs:

A30 30 30 20 20 20 20 10 10 10

B20 20 20 20

C30 20 20 20 10

D20 20 20 20 10

E30 20 20 20 20 10

Show Suggested Answer Hide Answer

Suggested Answer: B

by Buddy at Jun 28, 2022, 05:52 PM

Limited Time Offer

25%

Off

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

Contribute your Thoughts:

0/2000 characters

Submit Cancel

Krissy
4 months ago

I agree, A seems more likely with those values!

upvoted 0 times

...

Gayla
4 months ago

Definitely not B, it's gotta be A or C.

upvoted 0 times

...

Alverta
4 months ago

Wait, does it really sort like that? Sounds off.

upvoted 0 times

...

Jerilyn
5 months ago

I think the output will be option B!

upvoted 0 times

...

Carylon
5 months ago

The code sorts the deque in descending order.

upvoted 0 times

...

Dan
5 months ago

I practiced a similar question, and I think the output should be the values of `B` that are equal to 20, but I can't recall the exact format.

upvoted 0 times

...

Curt
5 months ago

I'm not entirely sure, but I think `equal_range` will find all instances of `B(20)` after sorting.

upvoted 0 times

...

Joseph
5 months ago

I remember that the `deque` is sorted in descending order, so the largest values come first.

upvoted 0 times

...

Tricia
5 months ago

I feel like the output might be option B, since it seems to match the number of 20s in the sorted deque.

upvoted 0 times

...

Josephine
5 months ago

Hmm, this looks like a tricky one. I'll need to think through the flow requirements carefully to determine the best approach.

upvoted 0 times

...

Merlyn
5 months ago

This looks like a pretty straightforward autofs configuration question. I think I can handle this by following the steps in the question and setting up the autofs service properly.

upvoted 0 times

...

Bette
5 months ago

I'm a bit confused by the options here. Is the Reference Guide more of a general overview, while the Troubleshooting Guide is specifically for resolving issues? I'll have to weigh the differences to determine the best choice.

upvoted 0 times

...

Basilia
5 months ago

Based on my understanding of IBM Netezza's architecture, the shared file system across the host containers is most likely IBM Spectrum Scale or GPFS. That's my best guess for this question.

upvoted 0 times

...