取文件长度字节数

[c]代码库

#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <io.h>

int main ( void )
{
	int handle;
	char buf[11] = "0123456789";

	/* create a file containing 10 bytes */
	handle = open ( "DUMMY.FIL", O_CREAT );
	write ( handle, buf, strlen ( buf ) );

	/* display the size of the file */
	printf ( "file length in bytes: %ld\n",
	         filelength ( handle ) );

	/* close the file */
	close ( handle );
	return 0;
}