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

What happens when you attempt to compile and run the following code?#include #include #include #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
B) 20 20 20 20
A) 30 30 30 20 20 20 20 10 10 10
C) 30 20 20 20 10
D) 20 20 20 20 10
E) 30 20 20 20 20 10

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

#include

#include

#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:

Show Suggested Answer Hide Answer
Suggested Answer: B

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

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Krissy
10 months ago
I agree, A seems more likely with those values!
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Gayla
10 months ago
Definitely not B, it's gotta be A or C.
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Alverta
10 months ago
Wait, does it really sort like that? Sounds off.
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Jerilyn
10 months ago
I think the output will be option B!
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Carylon
11 months ago
The code sorts the deque in descending order.
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Dan
11 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.
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Curt
11 months ago
I'm not entirely sure, but I think `equal_range` will find all instances of `B(20)` after sorting.
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Joseph
11 months ago
I remember that the `deque` is sorted in descending order, so the largest values come first.
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Tricia
11 months ago
I feel like the output might be option B, since it seems to match the number of 20s in the sorted deque.
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Josephine
11 months ago
Hmm, this looks like a tricky one. I'll need to think through the flow requirements carefully to determine the best approach.
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Merlyn
11 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.
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Bette
11 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.
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Basilia
11 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.
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