谁能告诉我用C语言对软盘进行读写啊，最好能有一段代码（带注释的）给我参考一下

这年头 还有在研究软盘的

操作系统的接口函数，应该提供一致的文件操作类函数，不一致的用ioctl来区分

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\n");
   getch();
   sector = 0;
   if (absread(0, 1, sector, &buf) != 0)
   {
      perror("Disk problem");
      exit(1);
   }
   printf("Read OK\n");
   strt = 3;
   for (i=0; i<80; i++)
   {
      ch_out = buf[strt+i];
      putchar(ch_out);
   }
   printf("\n");
   return(0);
 }
 


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\n");
   getch();
   sector = 0;
   if (absread(0, 1, sector, &buf) != 0)
   {
      perror("Disk problem");
      exit(1);
   }
   printf("Read OK\n");
   strt = 3;
   for (i=0; i<80; i++)
   {
      ch_out = buf[strt+i];
      putchar(ch_out);
   }
   printf("\n");
   return(0);
 }
 

看到include进来一个dos.h，就该知道是怎么回事。