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char *c,char c[ ] and char *c[ ]
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Sekhar Ha
#1 / 5
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 char *c,char c[ ] and char *c[ ] Dear Sir/Madam,
My Question is "what is the difference between char *c,char c[]
and char *c[] ?.Also when does char *c and char c[] are considered equal ?".
Thanks in advance,
Sekhar H.
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| Tue, 03 Feb 2004 22:23:08 GMT |
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Richard B
#2 / 5
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char *c,char c[ ] and char *c[ ] Quote:
> My Question is "what is the difference between char *c,char c[]
> and char *c[] ?.Also when does char *c and char c[] are considered equal ?".
That is phrased suspiciously like a homework question. However:
char *c is a pointer to char.
char c[] is an array of chars.
char *c[] is an array of pointers to char.
char *c and char c[] are considered equal in function declarations,
_and_ under some other circumstances by people who are considerably
muddled about pointers and arrays.
Richard
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| Tue, 03 Feb 2004 22:52:59 GMT |
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Zoran Cutur
#3 / 5
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char *c,char c[ ] and char *c[ ]
Quote: > Dear Sir/Madam, > My Question is "what is the difference between char *c,char c[]
> and char *c[] ?.
the second "c is an array of char but with unspecified size, so
it is of incomplete type" if in a definition, but "c is a
pointer to char" when in a function definition. The third
reads "c is an array of pointers to char", again this would
only be true if there was a size given to the array.
One can use the forms with [] in declaring function parameters,
because in a function parameter list an array decays to a pointer.
Quote: >Also when does char *c and char c[] are considered equal ?".
Never.
--
"LISP is worth learning for the profound enlightenment experience
you will have when you finally get it; that experience will make you
a better programmer for the rest of your days." -- Eric S. Raymond
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| Tue, 03 Feb 2004 23:34:13 GMT |
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Mahesh Tom
#4 / 5
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char *c,char c[ ] and char *c[ ] Sekhar,
*c is a character pointer,
c is an character array,
*c[] is a array of character pointer.
Quote: >>.Also when does char *c and char c[] are considered equal ?".
*C is an pointer variable, which could hold any address value whereas
c[] is an array once declared can't be changed.Take a look at the
example below:-
int main(void)
{
char *c;
char a[];
c=a; /* this is correct */
c= (char *) malloc(sizeof(int)); /* this is also correct */
a=c; /* This is an error, you can't reinitilize array */
Quote: }
I hope it will help.
-MT
Quote:
> Dear Sir/Madam, > My Question is "what is the difference between char *c,char c[]
> and char *c[] ?.Also when does char *c and char c[] are considered equal ?".
> Thanks in advance,
> Sekhar H.
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| Wed, 04 Feb 2004 02:11:51 GMT |
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