函数名: filelength

功 能: 取文件长度字节数

用 法: long filelength(int handle);

程序例:

#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\",

filelength(handle));

/* close the file */

close(handle);

return 0;

}