🚀 go-pugleaf

In article <4g176b$mrk@solutions.solon.com>,
Charles Frayer <frayer@expert.cc.purdue.edu> wrote:
>I'm converting numbers from an input file from decimal to hex, oct, and bin.
< following code completes the conversion successfully (sort of) and prints
>it to a file, but the converted numbers are printed backwards and hex numbers
>are all numbers instead of their equivalent letter values.  Any ideas?
>
>	while(lNumToConv > 0)
>	{
>	  iCoeff = (lNumToConv % iBase); 
>	  fprintf(fptrWrite, "%i", iCoeff);
>	  lNumToConv = (lNumToConv / iBase);
>	}
>	fprintf(fptrWrite, "\n");
>
>I know (literally) why they're printing backwards, but not how to correct it.
>
Here is some code that rolls the numbers off backwards are your are doing and
puts them in a string and reverses the string.

Excuse the Pascalness of the code at the time I was converting a large group
of programs from pascal. And working with retreaded Pascal programmers.

Good luck
Gordon  

   Gordon Couger 
   Biosystems & Agricultural Engineering. 114 AG Hall Stillwater, OK 74075
   gcouger@master.ceat.okstate.edu 405 744 8392 day 625-2855 evenings

Here is a farily effecent itoa. Strev can be improved by using
array notation and using the xor trick to swap the chars and
a switch would be quicker than the n+48. I was a long time ago.
Good luck
Gordon


char *strrev(char *s)
   {
   char t, *end,*begin;
   begin = s;
   end=s;
   while(*end)       /* go to end of string */
     end++;
   *end--;           /* back off one        */
   while (end>s)     /* reverse string      */
     {
     t=*s;
     *s=*end;
     *e=t;
     end--;
     s++;
     }
   s=begin;
   return s;
   }

void itoa(int num, char *s)
   #define TRUE 1
   #define FALSE 0
   {
   typedef int boolean;		/* boolean data type */
   char *cur;
   boolean neg = FALSE;
   if (num < 0)
      {
      neg = TRUE;
      num = -num;
      }
   if (num == 0)
      {
      *s++ = '0';
      *s = '\0';
      }
   else
      {
      cur = s;
      while(num)
         {
         *cur++ = 48 + (num % 10); /* this could be improved with a switch */
         num = num / 10;
         }
      if (neg)
         *cur++ = '-';
      *cur++ = 0;
      strrev(s);
/* printf("%s\n",s);*/
      }
   }