函数名: dosexterr

功 能: 获取扩展DOS错误信息

用 法: int dosexterr(struct DOSERR *dblkp);

程序例:

#include <stdio.h>

#include <dos.h>

int main(void)

{

FILE *fp;

struct DOSERROR info;

fp = fopen("perror.dat","r");

if (!fp) perror("Unable to open file for

reading");

dosexterr(&info);

printf("Extended DOS error \\

information:\");

printf(" Extended error: \\

%d\",info.exterror);

printf(" Class: \\

%x\",info.class);

printf(" Action: \\

%x\",info.action);

printf(" Error Locus: \\

%x\",info.locus);

return 0;

}