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C++ Institute CPP Exam - Topic 9 Question 49 Discussion

What happens when you attempt to compile and run the following code?#include using namespace std;int main(){cout.setf(ios::oct, ios::basefield);cout
A) 144 0144
B) 144 0x64
C) 0x144 0144
D) 0144 100
E) compilation error

C++ Institute CPP Exam - Topic 9 Question 49 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 49
Topic #: 9
[All CPP Questions]

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

#include

using namespace std;

int main()

{

cout.setf(ios::oct, ios::basefield);

cout<<100<<" ";

cout.setf(ios::showbase);

cout<<100<<" ";

return 0;

}

Program outputs:

Show Suggested Answer Hide Answer
Suggested Answer: A

by Haydee at May 31, 2022, 04:14 AM

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Luke
8 months ago
I disagree, it should be 0x64 for the second one.
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Mose
9 months ago
Wait, why is it 144 and not 100?
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Dalene
9 months ago
I think it should show the base for the second output.
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Sheridan
9 months ago
Definitely not a compilation error!
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Gabriele
9 months ago
Outputs 144 0144
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Roslyn
9 months ago
I feel like there might be a compilation error because of the way the `setf` function is used, but I can't quite remember if that's correct.
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Olive
9 months ago
I practiced a similar question where we had to set different formats, and I think the output should be 144 for the first one and something with a prefix for the second.
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Mabel
9 months ago
I remember something about showing the base with `ios::showbase`, but I can't recall if it applies to the first output or the second one.
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Casey
9 months ago
I think the first output should be in octal since we set it to octal format, but I'm not sure what the actual value will be.
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Ozell
10 months ago
Okay, I've got this. Documentary evidence is definitely required, so I'm going with option A. Can't go wrong with the basics.
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