Token Pasting

[Rudhir]

Hi Everyone,

How can I paste tokens with a white space between them?

Because,

#define Paste(a,b) (a ## b)

doesn't put a white space between the tokens.



Thanks,
Rudhir

[Richard Heathfield]

Re: Token Pasting

Rudhir said:

Hi Everyone,
>
How can I paste tokens with a white space between them?
>
Because,
>
#define Paste(a,b) (a ## b)
>
doesn't put a white space between the tokens.

#define Paste(a, b) (a b)

if you want the parentheses, and

#define Paste(a, b) a b

if you don't.

--
Richard Heathfield <http://www.cpax.org.uk >
Email: -http://www. +rjh@
Google users: <http://www.cpax.org.uk/prg/writings/googly.php>
"Usenet is a strange place" - dmr 29 July 1999

[santosh]

Re: Token Pasting

Rudhir wrote:

Hi Everyone,
>
How can I paste tokens with a white space between them?
>
Because,
>
#define Paste(a,b) (a ## b)
>
doesn't put a white space between the tokens.

Whitespace separates tokens. That will make it two tokens. So your
question is misinformed.

[Rudhir]

Re: Token Pasting

santosh wrote:

Rudhir wrote:
>

>Hi Everyone,
>>
>How can I paste tokens with a white space between them?
>>
>Because,
>>
>#define Paste(a,b) (a ## b)
>>
>doesn't put a white space between the tokens.

>
Whitespace separates tokens. That will make it two tokens. So your
question is misinformed.
>

OK. I get it. Operator '##' is used to make a single token by pasting
different tokens together. So no question of whitespaces.

It was a stupid question :) Humble Apologies.

Thanks for the help.


Rudhir