/*

Kenneth L Moore
CIT 145
22/01/02 07:13
file fileio.c This program demonstrates file input/output

*/

#include <stdlib.h>
#include <stdio.h>

#define FILE_IN "fileio.c"          /* file to read from */
#define FILE_OUT "fileio.tmp"        /* file to write to */

int main()
{
   FILE *infil, *outfil;  /* pointer variables of type FILE needed */
   int  c;
   int mm;
   char str[41];

   infil = fopen( FILE_IN, "r" );  /* open for input processing */
   if ( infil == NULL )
   {
      fprintf( stderr, "Unable to open input file %s\n", FILE_IN );
      exit( 8 );
   }

   if ( (outfil = fopen( FILE_OUT, "w" )) == NULL ) /* open for output */
   {
      fprintf( stderr, "Unable to open output file %s\n", FILE_OUT );
      exit( 8 );
   }
   
   while( ( c = fgetc( infil ) ) != EOF )  /* read to end, char-by-char */
   {
      if ( c == ' ' )       /* change spaces to underscores */
      {
         c = '_';
      }
      fputc( c, outfil );   /* write character to output file */
   }
   fclose( infil );
   fclose( outfil );

   infil = fopen( FILE_IN, "r" ); /* read again, word-by-word */
   if ( infil == NULL )
   {
      fprintf( stderr, "Unable to open input file %s\n", FILE_IN );
      exit( 8 );
   }

   while( fscanf( infil, "%40s", str ) != EOF )
   {
      fprintf( stdout, "<%s>\n", str );
   }
   fclose( infil );

   scanf("%d",&mm);
   return( 0 );

}