minix man page for getc

GETC(3) 						     Library Functions Manual							   GETC(3)

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

SYNOPSIS
       #include <stdio.h>

       int getc(FILE *stream)
       int getchar(void)
       int fgetc(FILE *stream)
       int getw(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  int 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
       clearerr(3), fopen(3), putc(3), gets(3), scanf(3), fread(3), ungetc(3).

DIAGNOSTICS
       These functions return the integer constant EOF at end of file, upon read error, or if an attempt is made to read  a  file  not	opened	by
       fopen.	The  end-of-file condition is remembered, even on a terminal, and all subsequent attempts to read will return EOF until the condi-
       tion is cleared with clearerr(3).

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

7th Edition							   May 14, 1986 							   GETC(3)