Hi,
I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
Thanks.
19  1556 
xdevel wrote:
Hi,
I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
I would use sprintf (or snprintf) from stdio.h
>
Thanks.
--
Pietro Cerutti
PGP Public Key: http://gahr.ch/pgp
On 2 Lug, 15:23, Pietro Cerutti <g...@gahr.chwr ote:
xdevel wrote:
Hi,
I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
I would use sprintf (or snprintf) from stdio.h
Thanks.
--
Pietro Cerutti
PGP Public Key:http://gahr.ch/pgp
Yes, but I wish to know if there are standard "one-to-one" functions.
I read that i.e. itoa is not!
"xdevel" <xd********@gma il.comwrote in message
news:11******** *************@g 4g2000hsf.googl egroups.com...
Hi,
I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
'sprintf()' works like 'printf()', except the output
is to a string instead of stdout.
(Be careful to ensure that your strings are large
enough to hold the output).
-Mike
Mike Wahler wrote:
"xdevel" <xd********@gma il.comwrote in message
news:11******** *************@g 4g2000hsf.googl egroups.com...
>Hi,
I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
'sprintf()' works like 'printf()', except the output
is to a string instead of stdout.
(Be careful to ensure that your strings are large
enough to hold the output).
Or use snprintf() and set the limit yourself.
>
-Mike
--
Pietro Cerutti
PGP Public Key: http://gahr.ch/pgp
xdevel <xd********@gma il.comwrites:
On 2 Lug, 15:23, Pietro Cerutti <g...@gahr.chwr ote:
>xdevel wrote:
I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
I would use sprintf (or snprintf) from stdio.h
Yes, but I wish to know if there are standard "one-to-one" functions.
I read that i.e. itoa is not!
No.
You can see all the functions in the standard C library by reading the
standard; search for "n1124.pdf" to see the latest draft.
(Please don't quote signatures; trim quoted material to what's
necessary for your response to make sense.)
--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <* <http://users.sdsc.edu/~kst>
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
Pietro Cerutti <ga**@gahr.chwr ites:
Mike Wahler wrote:
>"xdevel" <xd********@gma il.comwrote in message
news:11******* **************@ g4g2000hsf.goog legroups.com...
>>I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
'sprintf()' works like 'printf()', except the output
is to a string instead of stdout.
(Be careful to ensure that your strings are large
enough to hold the output).
Or use snprintf() and set the limit yourself.
If your implementation provides snprintf(). That function was added
in C99; many non-C99 implementations provide it as an extension, but
not all do.
--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <* <http://users.sdsc.edu/~kst>
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
Keith Thompson wrote:
Pietro Cerutti <ga**@gahr.chwr ites:
>Mike Wahler wrote:
>>"xdevel" <xd********@gma il.comwrote in message
news:11****** *************** @g4g2000hsf.goo glegroups.com.. .
I know there are in stdlib.h many functions to perform conversion from
string to int, double ecc.
but I don't understand if there are some standards function to perform
conversion from
int, double ecc to string
'sprintf()' works like 'printf()', except the output
is to a string instead of stdout.
(Be careful to ensure that your strings are large
enough to hold the output).
Or use snprintf() and set the limit yourself.
If your implementation provides snprintf(). That function was added
in C99; many non-C99 implementations provide it as an extension, but
not all do.
Uh, I wasn't aware of the fact that snprintf (and also vsnprintf) were
added only in C99.
Tnx for pointing it out!
--
Pietro Cerutti
PGP Public Key: http://gahr.ch/pgp
Pietro Cerutti wrote, On 02/07/07 18:05:
Keith Thompson wrote:
>Pietro Cerutti <ga**@gahr.chwr ites:
<snip>
>>Or use snprintf() and set the limit yourself.
If your implementation provides snprintf(). That function was added
in C99; many non-C99 implementations provide it as an extension, but
not all do.
Uh, I wasn't aware of the fact that snprintf (and also vsnprintf) were
added only in C99.
You also need to be aware that not all C89 implementations that provide
it as an extension provide the same semantics as C99 requires. IIRC the
_snprintf function MS provide has different sementaics (this is legal as
it starts with an _ and MS do not claim C99), for example.
--
Flash Gordon
On 2007-07-02, Flash Gordon <sp**@flash-gordon.me.ukwro te:
Pietro Cerutti wrote, On 02/07/07 18:05:
>Keith Thompson wrote:
>>Pietro Cerutti <ga**@gahr.chwr ites:
<snip>
>>>Or use snprintf() and set the limit yourself.
If your implementation provides snprintf(). That function was added
in C99; many non-C99 implementations provide it as an extension, but
not all do.
Uh, I wasn't aware of the fact that snprintf (and also vsnprintf) were
added only in C99.
You also need to be aware that not all C89 implementations that provide
it as an extension provide the same semantics as C99 requires. IIRC the
_snprintf function MS provide has different sementaics (this is legal as
it starts with an _ and MS do not claim C99), for example.
At first when I read this I was surprised that this was legal
since I thought that identifiers starting with an underscore
are reserved. Then when I checked the standard I understood that
it is reserved for implementations , which it is in this case.
I just want to check if I've understood this correct:
is it true, that all the reserved identifiers in the standard
are reserved for use only by the implementations ?
That is, if I'm writing and implementation of the standard libary
I am permitted to define new functions starting with an underscore,
but _not_ if I'm making some library that is not the standard lib?
--
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