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C++ Institute CPP Exam - Topic 9 Question 120 Discussion

What happens when you attempt to compile and run the following code?#include #include using namespace std;int main (){float f = 10.126;cout
A) 10.126 10
B) 10.126 10.12
C) compilation error
D) 10.126 10.13

C++ Institute CPP Exam - Topic 9 Question 120 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 120
Topic #: 9
[All CPP Questions]

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

#include

#include

using namespace std;

int main ()

{

float f = 10.126;

cout<

return 0;

}

Program outputs:

Show Suggested Answer Hide Answer
Suggested Answer: A

by King at Apr 01, 2026, 02:25 PM

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Kaitlyn
1 month ago
I feel like it might be a compilation error, but I agree with you both.
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Gail
2 months ago
Yeah, setprecision(2) rounds it to two decimal places.
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Jenifer
2 months ago
I think it outputs 10.126 10.12.
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Shelia
2 months ago
It's B for sure, setprecision affects the output.
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Felicitas
2 months ago
Wait, why does it round down? That’s weird!
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Francesco
2 months ago
Definitely not a compilation error!
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Kate
4 months ago
I think it should be 10.126 10.13, right?
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Dell
4 months ago
The output will be 10.126 10.12.
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Quiana
5 months ago
I’m a bit confused; I thought setprecision only works with fixed notation, but this code doesn’t specify that. Could it lead to a different output?
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Kayleigh
5 months ago
I practiced a similar question, and I think the output will show the float with two decimal places, so it might be B.
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Francoise
5 months ago
I remember something about setprecision affecting the output, but I can't recall if it rounds or just truncates the number.
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Linwood
5 months ago
I think the code should compile fine since there are no syntax errors, but I'm not sure about the output formatting.
upvoted 0 times
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