C++ Institute Exam CPP Topic 9 Question 91 Discussion

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

Question #: 91
Topic #: 9

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

vector v1(t, t+10);

for_each(v1.begin(), v1.end(), bind1st(plus(), 1));

for_each(v1.rbegin(), v1.rend(), Out(cout));cout<

return 0;

}

Program outputs:

A3 2 4 1 5 6 10 8 7 9

B4 3 5 2 6 7 11 9 8 10

C9 7 8 10 6 5 1 4 2 3

D10 8 9 11 7 6 2 5 3 4

Ecompilation error

Show Suggested Answer

Suggested Answer: B

by Casandra at Aug 03, 2024, 06:08 PM

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Rebecka

5 days ago

I think the output will be 4 3 5 2 6 1 10 8 7 9. The for_each function is adding 1 to each element, and then the reversed for_each is printing the elements.

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Dulce

9 days ago

The code seems to be adding 1 to each element of the vector and then printing them in reverse order. So the output should be 10 9 8 7 6 5 4 3 2 1.

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Marti

14 days ago

I'm not sure about the output, but I think it might be 0 1 because of the way the bind1st function is being called.

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Ashlyn

15 days ago

I agree with Franklyn, the bind1st function is not correctly used, so the output should be 0 0.

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Franklyn

25 days ago

I think the program will output 0 0 because the bind1st function is not correctly used.

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