On Wed, Dec 19, 2007 at 02:50:55PM +1100, Ian Wienand wrote:
> [ C version ]
Here's one in lex; ripped off from the flex info page.
I'd be interested in its performance compared to straight C.
No doubt worse, just curious how much worse.
$ cat count.l
cat count.l
int num_commas = 0;
%%
, ++num_commas;
.|\n {}
%%
main()
{
yylex();
printf( "# of commas = %d\n",
num_commas );
return 0;
}
$ lex -t count.l > count.c
$ cc count.c -lfl -o count
$ echo dsfsdf,,,, | ./count
# of commas = 4
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