C ++ pointer to the class structure

In the last chapter , we have learned that a common basis pointer usage , but knowing the structure and class pointers in how to use it? Will introduce

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In the structure or class, a pointer to access its member functions or variables by " -> " operator or see Notes section of code, the operation of the comment section is not recommended :

#include <iostream>
#include <cstring>
using namespace std;
struct STRUCT
{
    string hello;
};
int main()
{
    STRUCT *str=new STRUCT;
    str->hello="Hello";//或者可以写成: (*str).hello="Hello"
    cout<<str->hello<<endl;//或者可以写成: cout<<(*str).hello<<endl;
    delete str;
    return 0;
}

 1 #include <iostream>
 2 #include <cstring>
 3 using namespace std;
 4 class CLASS
 5 {
 6 public:
 7     string hello;
 8 };
 9 int main()
10 {
11     CLASS *str=new CLASS;
12     str->hello="Hello";//同理
13     cout<<str->hello<<endl;//同理
14     delete str;
15     return 0;
16 }

NOTE: class of the public can not save, struct the public can save   (  belonging to the grammar section, no explanation  )

On the pointer type and operate like structure (either data type), 

Note : be sure to give structure or class pointer declaration space, otherwise the output may be garbled or no output, I also recommend the use of smart pointers, so as not to apply to free up space

 Recommended viewing: C ++ smart pointer

Other pointers content, it is recommended to see here