c++ 指针１

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#include <iostream>
 
using namespace std;
 
int main ()
{
   int  var = 20;   // 实际变量的声明
   int  *ip;        // 指针变量的声明
 
   ip = &var;       // 在指针变量中存储 var 的地址
 
   cout << "Value of var variable: ";
   cout << var << endl;
 
   // 输出在指针变量中存储的地址
   cout << "Address stored in ip variable: ";
   cout << ip << endl;
 
   // 访问指针中地址的值
   cout << "Value of *ip variable: ";
   cout << *ip << endl;
 
   return 0;
}

Value of var variable: 20
Address stored in ip variable: 0x7ffcfa0c2abc
Value of *ip variable: 20