C++ Institute Exam CPP Topic 8 Question 94 Discussion

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

Question #: 94
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[]={6,10,8,7,9};

vector v1(10);

sort(t1, t1+5);

sort(t2, t2+5);

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

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

return 0;

}

Program outputs:

A1 2 3 4 5 6 10 8 7 9

B3 2 4 1 5 6 7 8 9 10

C3 2 4 1 5 6 10 8 7 9

D1 2 3 4 5 6 7 8 9 10

Ecompilation error

Show Suggested Answer

Suggested Answer: D

by Lacey at Sep 18, 2024, 07:12 AM

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Albina

1 months ago

Wait, what? Reverse order? Did the code accidentally summon a black hole that's sucking in the numbers? C is my choice, but I might need to consult a physicist before submitting.

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Beth

1 months ago

Compile error? Really? This code looks pretty straightforward. Clearly, the compiler must be on vacation today. E is just a wild guess.

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Ocie

1 months ago

I'm not sure about this one. The merge seems right, but the output looks a bit off. Maybe I should double-check the algorithm. D seems plausible, but I'm not confident.

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Nickolas

8 days ago

User3: I agree with User1, A) seems more likely based on the code

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Micaela

16 days ago

User2: I'm not so sure, I feel like it might be B) 2 3 4 5 6 7 8 9 10 11

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Lashanda

19 days ago

User1: I think the output will be A) 1 2 3 4 5 6 7 8 9 10

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Andra

1 months ago

Ha! Looks like someone's trying to trick us. The merge is done correctly, but the output is in reverse order. C is the way to go.

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India

3 days ago

I think C is the correct answer.

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Gabriele

2 months ago

Hmm, I think the merge function is working correctly, but the array indices might be off. Let me double-check the logic. Maybe B is the right answer?

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Rodrigo

1 months ago

User 3

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Alva

1 months ago

User 2

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Candra

1 months ago

User 1

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Tanja

2 months ago

The code seems to be merging two sorted arrays into a vector. The output should be the merged and sorted elements, so I'll go with A.

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Dottie

12 days ago

Looks like the code is merging and sorting the arrays correctly.

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Dottie

1 months ago

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

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Galen

2 months ago

I'm not sure, but I think the answer might be E) compilation error because the code is missing the include for the merge function. Without it, the code won't compile.

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Quentin

2 months ago

I agree with Valene. The code uses the sort function to sort the arrays and then merges them using the merge function. The output should be in ascending order.

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Valene

2 months ago

I think the answer is A) 1 2 3 4 5 6 7 8 9 10 because the code sorts the arrays t1 and t2 and then merges them into vector v1 in ascending order.

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