C++ Institute Exam CPP Topic 8 Question 76 Discussion

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

Question #: 76
Topic #: 8

[All CPP Questions]

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

#include

using namespace std;

templatestruct Out {

ostream & out;

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

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

int main() {

int t1[]={3,2,4,1,5};

int t2[]={5,6,8,2,1};

vector v1(10);

sort(t1, t1+5);

sort(t2, t2+5);

set_union(t1,t1+5,t2,t2+5,v1.begin());

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

return 0;

}

Program outputs:

A3 2 4 1 5 6 8 2 1 0

B1 2 3 4 5 6 8 2 1 0

C1 1 2 2 3 4 5 5 6 8

D1 2 3 4 5 6 8 0 0 0

Ecompilation error

Show Suggested Answer

Suggested Answer: E

by Junita at Dec 26, 2023, 07:00 PM

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Berry

4 months ago

Option E? Seriously? The only error here is the person who wrote this exam question. They must have been coding in COBOL or something.

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Ryann

4 months ago

Option D? Really? That's just nonsense. This code is clearly working correctly, and the output should be option A or B.

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Elvera

4 months ago

Haha, option C is a good one! The code must be broken if it's printing the elements in reverse order. Maybe the programmer is a time traveler.

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Lavonna

2 months ago

User1: Or maybe they wanted to test our attention to detail.

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Elmira

3 months ago

User3: It could be a logical error causing the reverse order.

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Jaleesa

3 months ago

User2: Maybe the programmer made a mistake in the code.

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Zack

3 months ago

User1: Yeah, option C is pretty funny.

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Kimberely

4 months ago

I think option B is the correct answer. The set_union function should return the unique elements from both arrays, and the output seems to be in the correct order.

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Eleonora

3 months ago

Looks like the code is working fine then. Option B it is.

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Leota

3 months ago

Yes, I agree. The set_union function should return unique elements in order.

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Laura

3 months ago

I think option B is the correct answer.

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Lacey

4 months ago

The output should be option A. The set_union function correctly merges the two sorted arrays and stores the result in the vector v1.

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Candida

3 months ago

E) compilation error

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Hershel

3 months ago

The output is correct because set_union merges the sorted arrays t1 and t2 into v1.

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Dorethea

3 months ago

A) 1 2 3 4 5 6 7 8 9 10

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Arthur

5 months ago

I'm not sure about the syntax error, but I think the output should be A) 1 2 3 4 5 6 7 8 9 10 because the code is sorting and merging two arrays into a vector.

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