c++ - 指针输出

Question

我只是想了解您输出指针的方式的不同。

假设我有:

int x = 100;
int*p = &x; 

以下各项会做什么？

cout << p << endl;
cout << *p << endl;
cout << &p << endl;

Answer 1

cout << p << endl;  // prints the adress p points to,
                    // that is the address of x in memory
cout << *p << endl; // prints the value of object pointed to by p,
                    // that is the value of x
cout << &p << endl; // prints the address of the pointer itself