函数名: absread, abswirte

功 能: 绝对磁盘扇区读、写数据

用 法: int absread(int drive, int nsects, int sectno, void *buffer);

int abswrite(int drive, int nsects, in tsectno, void *buffer);

程序例:

/* absread example */

#include <stdio.h>

#include <conio.h>

#include <process.h>

#include <dos.h>

int main(void)

{

int i, strt, ch_out, sector;

char buf[512];

printf("Insert a diskette into drive A and press any key\");

getch();

sector = 0;

if (absread(0, 1, sector, &buf) != 0)

{

perror("Disk problem");

exit(1);

}

printf("Read OK\");

strt = 3;

for (i=0; i<80; i++)

{

ch_out = buf[strt+i];

putchar(ch_out);

}

printf("\");

return(0);

}