RE: format number function

[Hiddukel]

This is the best solution I've seen thus far.  I got to digging and I
actually have a strip_color function that works in exactly the same way as
this.  BTW valnir ... the str_dup in your version of the function does work,
but it will allocate memory each time it is called and will never free it
... huge memory leak.

Thanks for all the help on this *bows to the gurus*.

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ryan
Jennings
Sent: Thursday, February 12, 2004 5:03 PM
To: ROM Mailing List
Subject: RE: format number function

You can use a static multi-buffer output.
new function would be like:

char *fnum(long number)
{
     int index,index_new,rest;
     char buf[16];
     static char buf_new[5][16];        // allows for 5 consecutive
calls
     static int I;                      // increment counter
     char *result;

     sprintf(buf, "%ld", number);
     rest = strlen(buf)%3;

     ++I, I %= 5; // increment the buffer
     result = buf_new[I];

     for (index = index_new = 0;index < strlen(buf); index++,
index_new++)
     {
          if (index != 0 && (index - rest) %3 == 0 )
          {
                   result[index_new]=',';
               index_new++;
                   result[index_new] = buf[index];
          }
          else
                   result[index_new] = buf[index];
     }
     result[index_new] = '\0';
     return result;
}

You could also make it more fun by passing a CHAR_DATA pointer and
making it plr configurable.

Markanth <[EMAIL PROTECTED]>

> I have a function that I got from a snippet that I need a
> little help with. It seems to work fine the first time it is 
> called but not the second time. Here is the code I was using 
> to test it with:
> 
> printf_to_ch(ch, "Your current balance is: %s Steel and %s
> Gold.\n\r", fnum(1000), fnum(2000));
> 
> What this outputs is:
> 
> Your current balance is: 1,000 Steel and 1,000 Gold.
> 
> When it should be:
> 
> Your current balance is: 1,000 Steel and 2,000 Gold.
> 
> Here is the fnum function in question:
> 
> char *fnum(long number)
> {
>      int index,index_new,rest;
>      char buf[16];
>      static char buf_new[16];
> 
>      sprintf(buf, "%ld", number);
>      rest = strlen(buf)%3;
> 
>      for (index = index_new = 0;index < strlen(buf); index++,
> index_new++)
>      {
>           if (index != 0 && (index - rest) %3 == 0 )
>           {
>                buf_new[index_new]=',';
>                index_new++;
>                buf_new[index_new] = buf[index];
>           }
>           else
>                buf_new[index_new] = buf[index];
>      }
>      buf_new[index_new] = '\0';
>      return buf_new;
> }
> 
> Any help on this would be very much appreciated.


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