获取DOS错误信息

[c]代码库

#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:\n" );
	printf ( "   Extended error: \
   %d\n",info.exterror );
	printf ( "            Class: \
   %x\n",info.class );
	printf ( "           Action: \
   %x\n",info.action );
	printf ( "      Error Locus: \
   %x\n",info.locus );

	return 0;
}