GETC(3)                        Library Routines                        GETC(3)

NAME

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

SYNOPSIS

       #include <stdio.h>

       int fgetc (FILE *stream);
       int getc (FILE *stream);
       int getchar (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 with the argument stdin.

       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
       condition  is  remembered,  even  on a terminal, and all subsequent at‐
       tempts to read will return EOF until  the  condition  is  cleared  with
       clearerr(3).

SEE ALSO

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

STANDARDS

       The fgetc, getc and getchar functions conform to ANSI/C.

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.

GNO                            15 September 1997                       GETC(3)