程序代码：

#include <stdio.h>
#include "stdlib.h"
void main(){
  int a=1;
_asm{
     mov esi,[ebp+24]   
     and esi,0xffff0000 
mmm: mov edi,[esi]
     cmp edi,0x4d5a
     jz  xxx
     sub esi,0x1000
     jmp mmm
xxx: mov [ebp-4],esi
    }
printf("%d",a);
}