Standard I/O routines

Frequently, one manual page describes several related functions or macros. In ``Standard I/O functions and macros'' the left column contains the name that appears at the top of the manual page; the other names in the same row are related functions or macros described on the same manual page. Programs that use these routines should include the header file stdio.h.

Standard I/O functions and macros

fclose	fflush			Close or flush a stream.
ferror	feof	clearerr	fileno	Stream status inquiries.
fopen	freopen	fdopen		Open a stream.
fread	fwrite			Input/output.
fseek	rewind	ftell		Reposition a file pointer in a stream.
getc	getchar	fgetc	getw	Get a character or word from a stream.
gets	fgets			Get a string from a stream.
popen	pclose			Begin or end a pipe to/from a process.
printf	fprintf	sprintf		Print formatted output.
putc	putchar	fputc	putw	Put a character or word on a stream.
puts	fputs			Put a string on a stream.
scanf	fscanf	sscanf		Convert formatted input.
setbuf	setvbuf			Assign buffering to a stream.
system				Issue a command through the shell.
tmpfile				Create a temporary file.
tmpnam	tempnam			Create a name for a temporary file.
ungetc				Push character back into input stream.
vprintf	vfprintf	vsprintf		Print formatted output of a varargs argument list.