main() { char *p = "hello world"; p[0] = 'H'; printf("%s", p); }

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INTERVIEW QUESTIONS LANGUAGES C DETAILS

Question :
main()
{
char *p = "hello world";
p[0] = 'H';
printf("%s", p);
}

Category C Interview Questions

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Added on 7/18/2006

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Answers:

Answer is B) Hello World.p[0] is just replacing the value on the first index.

Its output will vary on tc , Visual Studio
and on ISO C99
On TC it will give Hello world'
But on Visual Studio and C99 it will give segmentation fault

Because

char *p="hello";
char a[10]="raj";
here p is a pointer its addres can be changed means it can be made to point to somewhere else
But if its internal characters are tried to change then result is undetermined.....
But in a[10]="raj";
Here internal contents can be changed but a can't point to another location.........

Posted by: rajeev kumar

  Contact rajeev kumar

I thought the base address can't be modified, this is what i get for the above program :

blr-nsstg-view1% ./a.out
Segmentation Fault (core dumped)

Posted by: saikiran

  Contact saikiran

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