c/c++的*&调用

#define LOCAL
#include<cstdio>
#include<iostream>
using namespace std;
typedef int ElemType;
void fun1(ElemType *x)
{
    cout<<"x="<<(*x)<<endl;
}
void fun2(ElemType *&x)
{
    x=x+2;
}
int main()
{
#ifdef LOCAL
    freopen("1.in","r",stdin);
    freopen("1.out","w",stdout);
#endif
       ElemType a;
       ElemType *b;
       cin>>a;
       cout<<(*&a)<<endl;
       fun1(&a);
       b=&a;
       cout<<b<<endl;
       fun2(b);
       cout<<b<<endl;//存储单元加一
    return 0;
}

result:

1
x=1
0x22fedc
0x22fee4