NAME    [Toc]    [Back]

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

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #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    [Toc]    [Back]

     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 multithreaded
 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    [Toc]    [Back]

     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 condition
 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    [Toc]    [Back]

     ferror(3), fopen(3), fread(3), putc(3), ungetc(3)

STANDARDS    [Toc]    [Back]

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

BUGS    [Toc]    [Back]

     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