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C++ Institute CPP Exam - Topic 7 Question 62 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 62
Topic #: 7
[All CPP Questions]

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

#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

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[]={8, 10, 5, 1, 4, 6, 2, 7, 9, 3};

vector v1(t, t+10);

sort(v1.begin(), v1.end());

for_each(v1.begin(), v1.end(), Out(cout));cout<

return 0;

}

Program outputs:

Show Suggested Answer Hide Answer
Suggested Answer: C

by Penney at Feb 08, 2023, 12:16 PM

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Franchesca
6 months ago
Wait, how does it sort when the vector is initialized with integers?
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Man
6 months ago
Totally agree, it sorts the vector correctly!
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Georgiann
7 months ago
I think it might throw a compilation error.
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Glendora
7 months ago
It should output 1 2 3 4 5 6 7 8 9 10.
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Tuyet
7 months ago
The code compiles fine.
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Coral
7 months ago
I believe the sorting should arrange the values in ascending order, so I think option B is correct, but I hope I’m not missing something about the vector.
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Chauncey
7 months ago
I'm a bit confused about the vector initialization with the array. I feel like it might cause a compilation error, but I can't recall the specifics.
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Bernardo
7 months ago
I remember a similar question where we had to sort a custom class, and it worked as expected. So, I'm leaning towards option B for the output.
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Luisa
7 months ago
I think the code should compile fine since all the necessary operators and constructors are defined, but I'm not completely sure about the vector initialization.
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Joye
7 months ago
Hmm, I'm not sure about this one. Embedding them directly in the code seems like a bad idea, but I'm not sure if a hidden file is really that much more secure. Maybe I should consider changing them periodically instead?
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Tracey
7 months ago
This looks like a straightforward PROC PRINT question. I think I've got this one figured out.
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Leslie
7 months ago
I've got a good feeling about this one. The details in option A seem to match the description of Unified Data Management the best.
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Erinn
7 months ago
I remember we debated if this statement oversimplifies both communism and radical Islam. Maybe it's misleading to equate them?
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Selma
1 year ago
Ah, I see what they're doing here. The sort function should work just fine, and the output should be the sorted vector of B objects. Yep, B is the correct answer for sure.
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Leonard
1 year ago
Haha, I can already see the problem. They forgot to overload the << operator for the B class. Gotta love those pesky compilation errors!
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Ricarda
11 months ago
User3
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Tanesha
11 months ago
User2
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Gregg
12 months ago
Compilation errors can be tricky to debug sometimes.
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Gregg
12 months ago
Definitely, overloading the << operator is crucial for custom classes.
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Gregg
12 months ago
Yeah, that's a common mistake.
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Queen
1 year ago
This is a tricky one. The code includes some custom operator overloading, so it might not be as straightforward as it seems. I'll go with option B, just to be safe.
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Jolanda
1 year ago
Hmm, the code looks like it's trying to sort a vector of custom objects. My guess is that it will compile and run, and the output will be a sorted list of the object values.
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Nickolas
11 months ago
User 1
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Rosendo
11 months ago
User 2
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Nilsa
11 months ago
User 1
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Kasandra
11 months ago
Looks like the code is sorting a vector of custom objects.
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Ashlyn
1 year ago
The output will be a sorted list of object values.
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Sylvie
1 year ago
It will compile and run successfully.
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Gretchen
1 year ago
B) 1 2 3 4 5 6 7 8 9 10
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Aaron
1 year ago
I'm not sure, but I think the answer is B) 1 2 3 4 5 6 7 8 9 10 because the for_each function is used to output the sorted vector elements.
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Kami
1 year ago
I agree with Yen, the code uses the sort function to sort the vector of objects in ascending order.
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Yen
1 year ago
I think the answer is B) 1 2 3 4 5 6 7 8 9 10 because the code sorts the vector in ascending order.
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