Shulou(Shulou.com)06/01 Report--

This article mainly explains "the structure and case analysis of C++". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Now let the editor to take you to learn the "C++ structure and destructions of the case analysis" bar!

1. Constructor 1.1 what does the constructor look like

(1) the function name is the same as the class name

(2) No return value

(3) if you do not write a constructor, there is a default constructor in any class.

I default constructor is unparameterized

II when we write our own constructor, the default constructor does not exist

(4) the constructor is called when constructing the object.

(5) delete can be used to delete the default function.

(6) specify the default no-parameter constructor, which is specified in default.

(7) allow the constructor to call another constructor, just write the initialization parameter list.

(8) initialization parameter list: only the constructor has

I constructor name (parameter 1, parameter 2, …) Member 1 (parameter 1), member 2 (parameter 2), … {}

II avoids problems caused by the same formal parameter name and data member name

1.2 what is the constructor for?

(1) the constructor is used to construct the object.

(2) Constructors are more often used to initialize data members.

1.3 thinking

(1) Why not write a constructor to construct an object? Because there is a default no-parameter constructor, you can construct no-parameter objects

(2) what is the purpose of constructor overloading? In order to construct different-looking objects.

# include using namespace std;class MM {public: / / MM () = delete; delete the default constructor MM (string mmName, int mmAge) {name = mmName; age = mmAge; cout

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