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Notes (C + +) This article has some knowledge of C + + syntax and object-oriented, involving the bottom of assembly. 1. Essential differences between programming languages Compiled language (independent of virtual machine)scripting language Compiled language (virtual machine dependent)C,C++,object-CPHP,Python,JavaScriptJava,Ruby C + + cod ...

Here is shared_ There are three common ways to define PTR: shared_ptr sp;// Declare a smart pointer to type int sp.reset(new int(42)); auto sp1 = make_shared<string>("hello");//sp1 is a smart pointer shared_ptr sp2(new int(42)); And make_ The shared method is a recommended one. It uses one-time allocation and is relatively safe. We all ...

[problem description] Please design a program to realize the management of book inventory. Please complete the design according to the given main function and program output. The specific requirements are as follows. 1, Please design a Book Class: 1. Include private members: unsigned int m_ID;//number string m_Name;//title string m_Introd ...

Reasons for project proposal A dynamic link library is written in C + +, which contains h/.lib/.dll three files, but many users use C # to program. At this time, it is necessary to provide a dll that C # can call. There are generally two methods for C # to call dll, namely dllimport is used to encapsulate functions, but according to the relev ...

Prefix sum is an important preprocessing tool in the algorithm. Okay, I can't make it up anymore, it seems I don't have any [doge] Differential operations, which can be said to be the inverse of the sum of prefixes, are often used together with the prefix to solve some interval problems. Recently, I also encountered a lot of diffe ...

Single responsibility mode:  in the design of software components, if the division of responsibilities is not clear, the result of using inheritance is often that the subclass expands sharply with the change of requirements and is full of repeated code. At this time, the key is to clarify the responsibilities. Typical mode • Decorator • Bridge ...

1, Structure: a set of data representing a specific meaning is always stored Features: it encapsulates data (function encapsulates function) Benefits: 1 Improve code readability 2. Improve data usability 3. Improve code maintainability Structure definition format: struct +Structure name { Element 1; ..... } Structure definition structure va ...

preface The author searched for a long time and didn't find the right answer, so he wrote a c + + program to traverse all the possibilities The title and code are as follows 1, Title Once upon a time, there was a rich man who had 30 children, of which 15 were born to his late ex-wife and the other 15 were born to his stepwife. T ...

C + + will provide a default constructor, destructor and default copy constructor   Shorthand method of constructor CCylinder(double r,double h) { radius=r; height=h; }; ==>CCylinder(double r,double h):radius(r),height(h){} [this method is limited to constructors]   Allocate space during construction and release space during deco ...

catalogue 1, Understanding of class 2, Access qualifier and encapsulation of class 3, Scope and instantiation of class 4, Calculation of object size of class 5, this pointer of class member function 6, Constructor 7, Destructor 8, Copy constructor 9, Operator overloading 10, Implementation of date class Get the number of days per mon ...