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NetBSD 6.1.5 - man page for fgetc (netbsd section 3)

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GETC(3) 			   BSD Library Functions Manual 			  GETC(3)

NAME
     fgetc, getc, getchar, getc_unlocked, getchar_unlocked, getw -- get next character or word
     from input stream

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdio.h>

     int
     fgetc(FILE *stream);

     int
     getc(FILE *stream);

     int
     getchar();

     int
     getc_unlocked(FILE *stream);

     int
     getchar_unlocked();

     int
     getw(FILE *stream);

DESCRIPTION
     The fgetc() function obtains the next input character (if present) from the stream pointed
     at by stream, or the next character pushed back on the stream via ungetc(3).

     The getc() function acts essentially identically to fgetc(), but is a macro that expands in-
     line.

     The getchar() function is equivalent to: getc with the argument stdin.

     The getc_unlocked() and getchar_unlocked() functions provide functionality identical to that
     of getc() and getchar(), respectively, but do not perform implicit locking of the streams
     they operate on.  In multi-threaded programs they may be used only within a scope in which
     the stream has been successfully locked by the calling thread using either flockfile(3) or
     ftrylockfile(3), and may later be released using funlockfile(3).

     The getw() function obtains the next int (if present) from the stream pointed at by stream.

RETURN VALUES
     If successful, these routines return the next requested object from the stream.  If the
     stream is at end-of-file or a read error occurs, the routines return EOF.	The routines
     feof(3) and ferror(3) must be used to distinguish between end-of-file and error.  If an
     error occurs, the global variable errno is set to indicate the error.  The end-of-file con-
     dition is remembered, even on a terminal, and all subsequent attempts to read will return
     EOF until the condition is cleared with clearerr(3).

SEE ALSO
     ferror(3), flockfile(3), fopen(3), fread(3), ftrylockfile(3), funlockfile(3), putc(3),
     ungetc(3)

STANDARDS
     The fgetc(), getc() and getchar() functions conform to ANSI X3.159-1989 (``ANSI C89'').  The
     getc_unlocked() and getchar_unlocked() functions conform to ISO/IEC 9945-1:1996
     (``POSIX.1'').

BUGS
     Since EOF is a valid integer value, feof(3) and ferror(3) must be used to check for failure
     after calling getw().  The size and byte order of an int varies from one machine to another,
     and getw() is not recommended for portable applications.

BSD					  April 25, 2001				      BSD
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