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C++ Institute Exam CPP Topic 4 Question 70 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 70
Topic #: 4
[All CPP Questions]

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

#include

#include

#include

using namespace std;

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};

deque d1(t, t+10);

deque::iterator it = lower_bound(d1.begin(), d1.end(), 4);

for_each(it, d1.end(), Out(cout));cout<

return 0;

}

Program outputs:

Show Suggested Answer Hide Answer
Suggested Answer: E

by Daniela at Aug 05, 2023, 08:53 AM

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Maryanne
13 days ago
The code looks pretty straightforward, but I can't help but wonder if the programmer had a bad day when they wrote this. Anyway, I'm going with A.
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Lashunda
16 days ago
Wait, is the lower_bound function supposed to return the element itself or the first element greater than the value? I'm not sure about the answer.
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Carmelina
2 days ago
B) 2 3 4 5 6 7 8 9 10 11
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Chuck
22 days ago
Haha, looks like we're sorting a deque in reverse order. The correct answer is C.
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Ty
26 days ago
I think the code will compile without any errors, so the answer is not E.
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Alecia
1 months ago
The output should be 4 5 6 7 8 9 10, so the correct answer is A.
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Patria
15 days ago
That's correct! The output should be 4 5 6 7 8 9 10.
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Maddie
18 days ago
A) 1 2 3 4 5 6 7 8 9 10
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Patria
21 days ago
A) 1 2 3 4 5 6 7 8 9 10
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Shalon
2 months ago
I'm not sure, but I think the answer is A) 1 2 3 4 5 6 7 8 9 10 because lower_bound returns an iterator to the first element that is not less than the value passed, which is 4 in this case.
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Lewis
2 months ago
I agree with Viola, the lower_bound function returns an iterator to the first element that is not less than the value passed, so the output should be A) 1 2 3 4 5 6 7 8 9 10.
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Viola
2 months ago
I think the answer is A) 1 2 3 4 5 6 7 8 9 10 because lower_bound finds the first element that is not less than 4 in the deque.
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