函数名: intdosx

功 能: 通用DOS中断接口

用 法: int intdosx(union REGS *inregs, union REGS *outregs,

struct SREGS *segregs);

程序例:

#include

#include

/* deletes file name; returns 0 on success, nonzero on failure */

int delete_file(char far *filename)

{

union REGS regs; struct SREGS sregs;

int ret;

regs.h.ah = 0x41; /* delete file */

regs.x.dx = FP_OFF(filename);

sregs.ds = FP_SEG(filename);

ret = intdosx(®s, ®s, &sregs);

/* if carry flag is set, there was an error */

return(regs.x.cflag ? ret : 0);

}

int main(void)

{

int err;

err = delete_file("NOTEXIST.$$$");

if (!err)

printf("Able to delete NOTEXIST.$$$\");

else

printf("Not Able to delete NOTEXIST.$$$\");

return 0;

}