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  FPUTC

  .  Summary

  fputc(int <c>, int <fh>);

  .  Description

  The fputc function writes a character to the file indicated by the
  file handle <fh>. <c> is the character to write.

  .  Return Value

  The character written is returned, unless there is an error, in
  which case a value of -1 is returned.

  .  Example

  int f, i;
  str teststr[] = "This is a test string";
  f = fopen("test.dat", "w");
  for (i = 0; i < 21; ++i)           // write out string to file
   fputc(subchr(teststr, i), f);     // character by character