Hi all,
why does C language permits an extra comma in initializer list
ex:- int days[] = {
31,28.31,30,31, 30,
31,31,30,31,30, 31,
}
i have heard it is for the purpose of automatic code generation
is there any other purpose than this, if so why ...????
Feb 16 '08
22  3602 
On Feb 16, 5:38 pm, Ben Pfaff <b...@cs.stanfo rd.eduwrote:
Observe:
int array[] = {
#ifdef ELEMENT_ONE
1,
#endif
<snip>
};
versus:
int array[] = {
#ifdef ELEMENT_ONE
1
# if (defined(ELEMEN T_TWO) || defined(ELEMENT _THREE) \
|| defined(ELEMENT _FOUR))
,
# endif
#endif
<snip>
};
I know which one I would prefer to maintain.
I can't think of too many cases where it is problematic to do:
int array[] = {
#ifdef ELEMENT_ONE
1,
#endif
SENTINEL
};
to force the existence of at least one fixed
element.
Harald van Dijk wrote:
int foo[] = {
#ifdef FOO
42, 0,
#endif
37, EOF
#ifdef BAR
,'\n', EXIT_FAILURE
#endif
#ifdef BAZ
,SEEK_END, ERANGE
#endif
}
It's not difficult when you have at least one fixed item in the list.
But it is so ugly! :-)
--
Army1987 (Replace "NOSPAM" with "email")
On Feb 16, 10:33 pm, Richard Heathfield <r...@see.sig.i nvalidwrote:
vipps...@gmail. com said:
On Feb 16, 7:14 pm, Richard Heathfield <r...@see.sig.i nvalidwrote:
aark...@gmail.c om said:
Hi all,
why does C language permits an extra comma in initializer list
ex:- int days[] = {
31,28.31,30,31, 30,
Between 31 and 28 you meant ,, not ..
How do you know?
Call me psychic if you like.
28.31 is a valid value for initializing in integer
context.
Yes, but on this occasion it was not what was intended.
Yeah richard is correct he is indeed psychic to a certain extent
I did n't mean 28.31 , i meant 28,31 This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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