close

Syntax

#include <unistd.h> int close(int fd);

Description

The open file associated with fd is closed.

Return Value

Zero if the file was closed, nonzero if fd was invalid or already closed.

Portability

ANSI/ISO C	No
POSIX	1003.2-1992; 1003.1-2001

Example

int fd = open("data", O_RDONLY); close(fd);