/*-------------------------------------------------------------------*/
/* cat2.c  (The fgets and fputs functions)                           */
/*-------------------------------------------------------------------*/

#include <stdio.h>

#define MAX_LINE_LENGTH 256

/*-------------------------------------------------------------------*/

void copyFrom(FILE *psFile)

/* Read all lines from *psFile, and write them to stdout. */

{
   char pcBuffer[MAX_LINE_LENGTH];

   while (fgets(pcBuffer, MAX_LINE_LENGTH, psFile) != NULL)
      fputs(pcBuffer, stdout);
}

/*-------------------------------------------------------------------*/

int main(int argc, char *argv[])

/* If argc == 1, then read all lines from stdin, and write them to 
   stdout.  Otherwise read all lines from the files named 
   argv[1]...argv[argc-1], and write them to stdout. */

{
   int i;

   if (argc == 1)
      copyFrom(stdin);
   else
      for (i = 1; i < argc; i++)
      {
         FILE *psFile;
         psFile = fopen(argv[i], "r");
         if (psFile == NULL)
            fprintf(stderr, "%s: %s: No such file or directory\n", 
               argv[0], argv[i]);
         else
         {
            copyFrom(psFile);
            fclose(psFile);
         }
      }

   return 0;
}