/*--------------------------------------------------------------------*/
/* upper3.c                                                           */
/* Author: Bob Dondero                                                */
/*--------------------------------------------------------------------*/

#include <stdio.h>
#include <ctype.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;

   while ((iChar = getchar()) != EOF)
   {
      switch (iState)
      {
         case 0:
            if (isdigit(iChar))
            {
               putchar(iChar);
               iState = 1;
            }           
            else if (isupper(iChar))
            {
               putchar(iChar);
               iState = 1;
            }
            else if (islower(iChar))
            {
               putchar(toupper(iChar));
               iState = 1;
            }
            else
            {
               putchar(iChar);
               iState = 0; /* iState remains the same. */
            }
            break;
         case 1:
            if (isalnum(iChar))
            {
               putchar(iChar);
               iState = 1; /* iState remains the same. */
            }
            else
            {
               putchar(iChar);
               iState = 0;
            }
            break;
      }
   }
   return 0;
}