1. /*
  2.  *  Function:   itoa
  3.  *  Objective:  Convert int (i) to char* by adding 0x30 (decimal 48) to each digit and terminate the string.
  4.  *  Synopsis:   char* itoa(int i);
  5.  *  Example(s): itoa(123456789);
  6.  *                      - returns "123456789"
  7.  *  Notes:      We sacrifice memory for speed by using the z variable
  8.  */
  9. char* itoa(int i)
  10. {
  11.         if(i==0) return "0";
  12.         int w,x,y,z;
  13.         for(x=0;pow(10,x)<=i;x++) ;
  14.         char* string=malloc((sizeof(char)*x));
  15.         y=x-1;
  16.         for(x-=1;x>=0;x--)
  17.         {
  18.                 z=pow(10,x);
  19.                 if(x<0) break;
  20.                 w=(i/z);
  21.                 i=i-(z*w);
  22.                 string[y-x]=(char)(w+'\x30');
  23.         }
  24.         return string;
  25. }