fgetc(3) [freebsd man page]

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

NAME

     fgetc, getc, getc_unlocked, getchar, 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
     getc_unlocked(FILE *stream);

     int
     getchar(void);

     int
     getchar_unlocked(void);

     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(stdin).

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

     The getc_unlocked() and getchar_unlocked() functions are equivalent to getc() and getchar() respectively, except that the caller is responsi-
     ble for locking the stream with flockfile(3) before calling them.	These functions may be used to avoid the overhead of locking the stream
     for each character, and to avoid input being dispersed among multiple threads reading from the same stream.

RETURN VALUES

     If successful, these routines return the next requested object from the stream.  Character values are returned as an unsigned char converted
     to an int.  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

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

STANDARDS

     The fgetc(), getc(), and getchar() functions conform to ISO/IEC 9899:1990 (``ISO C90'').  The getc_unlocked() and getchar_unlocked() func-
     tions conform to IEEE Std 1003.1-2001 (``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
								 January 10, 2003							       BSD

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

NAME

     fgetc, getc, getc_unlocked, getchar, 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
     getc_unlocked(FILE *stream);

     int
     getchar(void);

     int
     getchar_unlocked(void);

     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(stdin).

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

     The getc_unlocked() and getchar_unlocked() functions are equivalent to getc() and getchar() respectively, except that the caller is responsi-
     ble for locking the stream with flockfile(3) before calling them.	These functions may be used to avoid the overhead of locking the stream
     for each character, and to avoid input being dispersed among multiple threads reading from the same stream.

RETURN VALUES

     If successful, these routines return the next requested object from the stream.  Character values are returned as an unsigned char converted
     to an int.  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

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

STANDARDS

     The fgetc(), getc(), and getchar() functions conform to ISO/IEC 9899:1990 (``ISO C90'').  The getc_unlocked() and getchar_unlocked() func-
     tions conform to IEEE Std 1003.1-2001 (``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
								 January 10, 2003							       BSD