|GETC(3)||Library Functions Manual||GETC(3)|
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).
getc() function acts essentially
fgetc(), but is a macro that expands
getchar() function is equivalent to
getc() with the argument
getw() function obtains the next
int (if present) from the stream pointed at by
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
EOFuntil the condition is cleared with clearerr(3). ferror(3), fopen(3), fread(3), putc(3), ungetc(3)
getchar() functions conform to ANSI X3.159-1989 (“ANSI C89”).
getw() functions first appeared in Version 1 AT&T UNIX;
getchar() in Version 2 AT&T UNIX; and
fgetc() in Version 7 AT&T UNIX. Dennis Ritchie originally implemented
getw() in PDP-11 assembler.
EOFis a valid integer value, feof(3) and ferror(3) must be used to check for failure after calling
Since the size and byte order of an int may
vary from one machine to another,
getw() is not
recommended for portable applications.
|January 15, 2012||OpenBSD-5.1|