高级引用机制C++

    #include<iostream>
    using namespace std;
    int main()
    {
    	int a = 211;
    	int* p1 = &a;
    	int** p2 = &p1;
    	int*** p3 = &p2;
    	cout << "a=" << a
    		<< "\t\t*p=" << *p1		// a = 211 * p = 211 * *p2 = 211 * **p3 = 211
    		<< "\t\t**p2=" << **p2
    		<< "\t\t***p3=" << ***p3 << endl;
    	cout << "&a=" << &a;		//输出的是地址 
    	cout << endl;
    	cout << "p1=" << p1;		//输出的是地址 
    
    	return 0;
    }