using defined characters as strings

[Martijn]

Hi,

I think I can best ask my question by example. I may be overlooking
something, but this is like what I have:

#define ID1 'i'
#define ID2 'd'
#define ID3 'n'

This is what I want in my output file:

i=100:d=200:n=300

This is what I do:

sprintf("%c=%d:%c=%d:%c=%d\n",
ID1, 100,
ID2, 200,
ID3, 300);

That means that the characters are inserted run-time. Is there a way to
make them part of the string-constant so that I can put them into my string
compile-time?

Sorry if the question is formulated somewhat strange :) Thanks for any
help!

--
Martijn
http://www.sereneconcepts.nl

[Michael Mair]

Martijn wrote:

Hi,

I think I can best ask my question by example. I may be overlooking
something, but this is like what I have:

#define ID1 'i'
#define ID2 'd'
#define ID3 'n'

This is what I want in my output file:

i=100:d=200:n=300

This is what I do:

sprintf("%c=%d:%c=%d:%c=%d\n",
You either forgot the buffer or use the wrong *printf() function.
ID1, 100,
ID2, 200,
ID3, 300);

That means that the characters are inserted run-time. Is there a way to
make them part of the string-constant so that I can put them into my string
compile-time?

Sorry if the question is formulated somewhat strange :) Thanks for any
help!

Does
#define STRINGIZE(S) #S
#define XSTR(S) STRINGIZE(S)

#define ID1 i

....
printf(XSTR(ID1)"=%d",100)

help you or do you need the character constants elsewhere?
Cheers
Michael
--
E-Mail: Mine is an /at/ gmx /dot/ de address.

[CBFalconer]

Martijn wrote:

Hi,

I think I can best ask my question by example. I may be overlooking
something, but this is like what I have:

#define ID1 'i'
#define ID2 'd'
#define ID3 'n'

This is what I want in my output file:

i=100:d=200:n=300

This is what I do:

sprintf("%c=%d:%c=%d:%c=%d\n",
ID1, 100,
ID2, 200,
ID3, 300);

That means that the characters are inserted run-time. Is there a way to
make them part of the string-constant so that I can put them into my string
compile-time?

sprintf("i=%d:d=%d:n=%d\n", 100, 200, 300);

--
"If you want to post a followup via groups.google.com, don't use
the broken "Reply" link at the bottom of the article. Click on
"show options" at the top of the article, then click on the
"Reply" at the bottom of the article headers." - Keith Thompson

[Joona I Palaste]

CBFalconer <cb********@yahoo.com> scribbled the following:

Martijn wrote:

Hi,

I think I can best ask my question by example. I may be overlooking
something, but this is like what I have:

#define ID1 'i'
#define ID2 'd'
#define ID3 'n'

This is what I want in my output file:

i=100:d=200:n=300

This is what I do:

sprintf("%c=%d:%c=%d:%c=%d\n",
ID1, 100,
ID2, 200,
ID3, 300);

That means that the characters are inserted run-time. Is there a way to
make them part of the string-constant so that I can put them into my string
compile-time?

sprintf("i=%d:d=%d:n=%d\n", 100, 200, 300);

A very nice solution, but you're still using sprintf() in the wrong way.
Do you mean printf()?

--
/-- Joona Palaste (pa*****@cc.helsinki.fi) ------------- Finland --------\
\-------------------------------------------------------- rules! --------/
"There's no business like slow business."
- Tailgunner

[CBFalconer]

Joona I Palaste wrote:

CBFalconer <cb********@yahoo.com> scribbled the following:

Martijn wrote:

I think I can best ask my question by example. I may be overlooking
something, but this is like what I have:

#define ID1 'i'
#define ID2 'd'
#define ID3 'n'

This is what I want in my output file:

i=100:d=200:n=300

This is what I do:

sprintf("%c=%d:%c=%d:%c=%d\n",
ID1, 100,
ID2, 200,
ID3, 300);

That means that the characters are inserted run-time. Is there
a way to make them part of the string-constant so that I can
put them into my string compile-time?

sprintf("i=%d:d=%d:n=%d\n", 100, 200, 300);

A very nice solution, but you're still using sprintf() in the
wrong way. Do you mean printf()?

Yup. I guess the OP did also.

--
"If you want to post a followup via groups.google.com, don't use
the broken "Reply" link at the bottom of the article. Click on
"show options" at the top of the article, then click on the
"Reply" at the bottom of the article headers." - Keith Thompson

[Barry Schwarz]

On Thu, 24 Mar 2005 00:10:06 +0100, "Martijn"
<su*********************@hot-remove-mail.com> wrote:

Hi,

I think I can best ask my question by example. I may be overlooking
something, but this is like what I have:

#define ID1 'i'
#define ID2 'd'
#define ID3 'n'

This is what I want in my output file:

i=100:d=200:n=300

This is what I do:

sprintf("%c=%d:%c=%d:%c=%d\n",
ID1, 100,
ID2, 200,
ID3, 300);

That means that the characters are inserted run-time. Is there a way to
make them part of the string-constant so that I can put them into my string
compile-time?

If you change the defines to specify double quotes (") instead of
single quotes ('), then your format string can be coded as
ID1 "=%d:" ID2 "=%d:" ID3 "=%d\n"
since the compiler will automatically merge adjacent quoted strings
together.
<<Remove the del for email>>