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fclose
[close a file]

SYNOPSIS
#include <stdio.h>
int fclose(FILE *fp);

DESCRIPTION
If the file or stream identified by fp is open, fclose closes it, after first ensuring that any pending data is written (by calling fflush(fp)).

RETURNS
fclose returns 0 if successful (including when fp is NULL or not an open file); otherwise, it returns EOF.

COMPLIANCE
fclose is required by ANSI C.

Required OS subroutines: close, fstat, isatty, lseek, read, sbrk, write.