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Topic: No static variables in union? (Read 1711 times) |
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howard roark
Full Member
Posts: 241
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No static variables in union?
« on: Sep 25th, 2008, 9:01pm » |
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Why cant we declare static variables in union?
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GowriKumar
Junior Member
 
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Posts: 55
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Re: No static variables in union?
« Reply #1 on: Sep 25th, 2008, 11:11pm » |
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I'm little confused about the question.
Is the question why this is not allowed:
union foo{
static int il;
};
If yes, the following explanation might help:
static keyword applies for variables/functions, but not the names inside the structures/unions.
union foo {
int i;
int j;
};
static union foo f; /* f is of type union foo and is static */
Regards,
Gowri Kumar
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| « Last Edit: Sep 25th, 2008, 11:30pm by GowriKumar » |
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towr
wu::riddles Moderator
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Some people are average, some are just mean.
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Re: No static variables in union?
« Reply #2 on: Sep 26th, 2008, 2:20am » |
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A union allows you to address the same element of data in different ways. Now this would clearly pose a problem if it is at the same time static and not static.
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RajivG
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Re: No static variables in union?
« Reply #3 on: Sep 27th, 2008, 1:17am » |
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now after reading it i got a problem 
normally we do not implement grammar where i feel infeasibility of semantic and syntax implementation.
static variable in structure--------- > i do not see any problem, this is what c++ compiler does when we ask it to give a class with static member.. as essentially class nothing but a structure
now if it is question of Union and i make rule that all members should be static then complier should allow this
can some one put some light ? what problem can be there either semantic of syntactic
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