typedef unsigned short int USHORT;  
#include   <iostream.h>  
  
int   main()  
{  
     USHORT *pInt = new USHORT;  
     *pInt=10;
     cout<<pInt<<endl; 
     cout<<"*pInt: "<<*pInt<<endl;  
     delete pInt;   //pInt为一迷途指针!
     pInt=0;
     long *pLong = new long;
     cout<<pInt<<endl;  
     cout<<pLong<<endl;
     *pLong=90000;  
     cout<<"*pLong: "<<*pLong<<endl;   

     *pInt=20;      //再次使用pInt!  

     cout<<"*pInt: "<<*pInt<<endl;  
     cout<<"*pLong: "<<*pLong<<endl;  
     delete   pLong;  
     return  

pInt=0;设置空指针的作用是为了让以后程序崩溃的时候可预料么？？还有就是
cout<<"*pInt: "<<*pInt<<endl;  
cout<<"*pLong: "<<*pLong<<endl;
这两天语句的输出结果很多资料说是  *pInt:20， *pLong:65556，为什么我压根就运行不出来呢



[ 本帖最后由 gao_guai 于 2012-7-10 10:44 编辑 ]

不好意思，下回到c++里面发