g##g2 means gg2 i,e concat g & g2 & by the property of #define it is
replace where it is called.
On Thu, Jun 16, 2011 at 8:36 PM, amit the cool <amitthecoo...@gmail.com>wrote:
> #define f(g,g2) g##g2
> main()
> {
> int var12=100;
> printf("%d",f(var,12));
> }
> output-100
>
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