/*--------------------------------------------------------------------*/
/* upper1.c                                                           */
/* Author: Bob Dondero                                                */
/*--------------------------------------------------------------------*/

#include <stdio.h>

int main(void)

/* Read text from stdin.  Convert the first character of each "word"
   to uppercase, where a word is a sequence of alphanumeric characters.
   Write the result to stdout.  Return 0. */

{
   int iChar;
   int iState = 0;

   iChar = getchar();
   while (iChar != EOF)
   {
      switch (iState)
      {
         case 0:
            if ((iChar >= 48) && (iChar <= 57))
            {
               putchar(iChar);
               iState = 1;
            }
            else if ((iChar >= 65) && (iChar <= 90))
            {
               putchar(iChar);
               iState = 1;
            }
            else if ((iChar >= 97) && (iChar <= 122))
            {
               putchar(iChar - 97 + 65);
               iState = 1;
            }
            else
            {
               putchar(iChar);
               iState = 0;  /* iState remains the same. */
            }
            break;
         case 1:
            if (((iChar >= 48) && (iChar <= 57)) || 
                ((iChar >= 65) && (iChar <= 90)) ||
                ((iChar >= 97) && (iChar <= 122)))
            {
               putchar(iChar);
               iState = 1; /* iState remains the same. */
            }
            else
            {
               putchar(iChar);
               iState = 0;
            }
            break;
      }
      iChar = getchar();
   }
   return 0;
}