v7 man page for getc

GETC(3S)																  GETC(3S)

NAME
       getc, getchar, fgetc, getw - get character or word from stream

SYNOPSIS
       #include <stdio.h>

       int getc(stream)
       FILE *stream;

       int getchar()

       int fgetc(stream)
       FILE *stream;

       int getw(stream)
       FILE *stream;

DESCRIPTION
       Getc returns the next character from the named input stream.

       Getchar() is identical to getc(stdin).

       Fgetc behaves like getc, but is a genuine function, not a macro; it may be used to save object text.

       Getw  returns  the  next word from the named input stream.  It returns the constant EOF upon end of file or error, but since that is a good
       integer value, feof and ferror(3) should be used to check the success of getw.  Getw assumes no special alignment in the file.

SEE ALSO
       fopen(3), putc(3), gets(3), scanf(3), fread(3), ungetc(3)

DIAGNOSTICS
       These functions return the integer constant EOF at end of file or upon read error.

       A stop with message, `Reading bad file', means an attempt has been made to read from a stream that has  not  been  opened  for  reading	by
       fopen.

BUGS
       The end-of-file return from getchar is incompatible with that in UNIX editions 1-6.

       Because	it  is	implemented as a macro, getc treats a stream argument with side effects incorrectly.  In particular, `getc(*f++);' doesn't
       work sensibly.

																	  GETC(3S)