I am sorry for my previous incomplete posting.
Here is the correct one:
size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i )
{
// iterate through the string
// and do some operations
}
What is the best choice to replace 'WHAT' in the above code?
size_t or int ? Why ? 11 5289
qazmlp <qa********@red iffmail.com> wrote in message
news:db******** *************** ***@posting.goo gle.com... I am sorry for my previous incomplete posting.
Here is the correct one:
size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i ) { // iterate through the string // and do some operations }
What is the best choice to replace 'WHAT' in the above code? size_t or int ? Why ?
If you *know* your indices will *always* fall in the range
of type 'int', then you could use it.
Or if you don't want to be bothered with such annoying
details that could bite you later, use 'size_t' which
is *guaranteed* to be able to represent any index value.
So, neither 'int' nor 'size_t' is necessarily "right" or
"wrong" per se, but if asked for advice, I say use 'size_t'
whenever storing the size of an object or an array index.
-Mike
On Fri, 01 Aug 2003 12:45:21 -0700, "E. Robert Tisdale"
<E.************ **@jpl.nasa.gov > wrote: Historically , C subscripts have always been type int
An integral type, not necessarily int.
--
Al Balmer
Balmer Consulting re************* ***********@att .net Da*****@cern.ch (Dan Pop) writes:
[...] Neither. Both will render your code syntactically invalid.
Why ?
Because the currently implemented C specification says so. Do not confuse C with C99 or C++ !
C99 is C. It's worth pointing out that C90 is still more widely
implemented than C99, but that doesn't make C99 invalid or off-topic.
I know of at least two C compilers (a recent gcc with "-std=c99", and
Intel's ecc for IA-64) that claim C99 support and seem to handle the
for (int i = 1; i <= 10; i ++)
construct correctly. Whether they fully support the entire C99
language is another question.
--
Keith Thompson (The_Other_Keit h) ks*@cts.com <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://www.sdsc.edu/~kst>
Schroedinger does Shakespeare: "To be *and* not to be"
On 31 Jul 2003 22:58:23 -0700, qa********@redi ffmail.com (qazmlp)
wrote: I am sorry for my previous incomplete posting.
Here is the correct one:
size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i ) { // iterate through the string // and do some operations }
What is the best choice to replace 'WHAT' in the above code? size_t or int ? Why ?
Since size_t is guaranteed to be able to hold the size of the largest
object the compiler can support and int is not, what do you think?
<<Remove the del for email>>
"qazmlp" <qa********@red iffmail.com> wrote in message
news:db******** *************** ***@posting.goo gle.com... I am sorry for my previous incomplete posting.
Here is the correct one:
size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i ) { // iterate through the string // and do some operations }
What is the best choice to replace 'WHAT' in the above code? size_t or int ? Why ?
Am I correct in guessing the headers for this code are stdio.h and string.h,
and that's it.
Bill [beginner]
-----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
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Barry Schwarz <sc******@deloz .net> wrote in message news:<bg******* ***@216.39.134. 41>... On 31 Jul 2003 22:58:23 -0700, qa********@redi ffmail.com (qazmlp) wrote:
I am sorry for my previous incomplete posting.
Here is the correct one:
size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i ) { // iterate through the string // and do some operations }
What is the best choice to replace 'WHAT' in the above code? size_t or int ? Why ?
Since size_t is guaranteed to be able to hold the size of the largest object the compiler can support and int is not, what do you think?
<<Remove the del for email>>
In article <ye************ *@king.cts.com> , ks*@cts.com says... C99 is C. It's worth pointing out that C90 is still more widely implemented than C99, but that doesn't make C99 invalid or off-topic.
I don't think anyone said C99 was off-topic.
I know of at least two C compilers (a recent gcc with "-std=c99", and Intel's ecc for IA-64) that claim C99 support and seem to handle the
for (int i = 1; i <= 10; i ++)
Do the docs for Intel's ecc claim 100% C99 conformance, or just that
"some C99 constructs work"? Not being argumentative, I'm very curious.
Up until now, only the Comeau compiler has been mentioned as falling
into that category, but I don't know how widespread its use is, and
if it's known to be true.
construct correctly. Whether they fully support the entire C99 language is another question.
You could argue that since gcc is probably available on more platforms
than any other C compiler (or perhaps even all the rest combined),
that unless you are doing embedded work for hardware not supported by
gcc, that writing to whatever "-std=c999" supports for a given version
of gcc might be good enough to provide "ample portabality", provided that
you realize that's quite a nebulous term.
In 'comp.lang.c', qa********@redi ffmail.com (qazmlp) wrote: size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i )
Your construct is C99. Don't use too many spaces. Just the minimum to make
the code clear.
{ // iterate through the string // and do some operations }
What is the best choice to replace 'WHAT' in the above code? size_t or int ? Why ?
The 'size_t' type is a good choice for an array index, because it covers from
0 to the maximum size for an object - 1. (except in twisted cases using a
sub-array where the index can be negative).
size_t len = strlen (myCString);
size_t i;
for (i = 0; i < len; ++i)
{
/* iterate through the string */
/* and do some operations */
}
--
-ed- em**********@no os.fr [remove YOURBRA before answering me]
The C-language FAQ: http://www.eskimo.com/~scs/C-faq/top.html
<blank line>
FAQ de f.c.l.c : http://www.isty-info.uvsq.fr/~rumeau/fclc/
In 'comp.lang.c', "Bill Cunningham" <so**@some.ne t> wrote: size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i ) { // iterate through the string // and do some operations }
What is the best choice to replace 'WHAT' in the above code? size_t or int ? Why ?
Am I correct in guessing the headers for this code are stdio.h and string.h, and that's it.
Not really. Assuming 'size_t' is used, there are <stddef.h> and <stringh>,
but because strlen() returns a size_t, <stddef.h> is probably already
included in <string.h>, so <string.h> would suffice.
--
-ed- em**********@no os.fr [remove YOURBRA before answering me]
The C-language FAQ: http://www.eskimo.com/~scs/C-faq/top.html
<blank line>
FAQ de f.c.l.c : http://www.isty-info.uvsq.fr/~rumeau/fclc/ This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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Hi,
Honestly, what is this 'size_t'?
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Short explanations? Links? FAQ?
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by: qazmlp |
last post by:
size_t len = strlen( myCString ) ;
for( WHAT i = 0 ; i < len ; ++i )
{
// iterate through the string
// and do some operations
}
|
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typedef __kernel_ssize_t ssize_t;
//"asm/posix_types.h"
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>
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