C/C++ return *this和return this的区别

 1 class Test
 2 {
 3  public: 
 4     Test()
 5     { 
 6       return this;  //返回的当前对象的地址
 7     }
 8     Test&()
 9     { 
10       return *this;  //返回的是当前对象本身
11     }
12     Test()
13     { 
14       return *this;   //返回的当前对象的克隆
15     }
16  private:  //...
17 };

 1 #include <iostream>
 2 using namespace std;
 3 class Test
 4 {
 5 public:
 6     int x;
 7     Test get()
 8     {
 9         return *this; //返回当前对象的拷贝
10     }
11 };
12 int main()
13 {
14     Test a;
15     a.x = 4;
16     if(a.x == a.get().x)
17     {
18         cout << a.x << endl;
19                 cout <<  &a << endl;
20                cout << &a.get() <<endl;
21     }
22     else
23     {
24         cout << "no" << endl;
25                 cout <<  &a << endl;
26                cout << &a.get() <<endl;
27     }
28 
29     return 0;
30 }