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[Basic C++] 24 - "const" and "constexpr" keywords in C++ 2020. 7. 29. 1. "const" and "constexpr" keywords There are two keywords in C++ to specify the value of a variable or function to be constant; there are "const" and "constexpr" keywords in C++. Lots of basic-level programmers are likely to think that "the sole purpose of using these keywords is to prevent some variables from being altered accidentally". When it comes to "const" specifier, the statement is tru..
[Basic C++] 23 - Elaborated explanation for "const" keyword in C++ 2020. 7. 29. In the previous post (2020/07/27 - [Programming/C++ Basic] - [Basic C++] 22 - Declaration and Definition), the fundamental concepts of declaration and definition are explained roughly. They are the two most crucial concepts that programmers must understand deeply to generate proper code in C++. In this post, I am going to talk more about declaration and declaration. The way to declare variables ..
[Basic C++] 22 - Declaration and Definition 2020. 7. 27. Declaration and definition are the two most fundamental concepts to form programs in C++. Although many programmers including me write code without a full understanding of these concepts and it may lead our code to critical failures or significantly decreased performance. 1. Declaration Declaring a variable is to tell the compiler the existence of the variable at the point of the declaration. By..
[Basic C++] 21 - "this" Keyword in C++ 2020. 7. 25. The "this" keyword is one of the most useful keywords when it comes to object-oriented programming to deal with multiple objects. "this" is just a pointer variable to store the address of the current object. Let's recap how classes and objects work in C++ first shortly. Figure 1 shows class X and its two objects. Class X has two class members variables and a class member function. As these class..
[Basic C++] 20 - Static members / Const members / Static const members in C++ 2020. 7. 15. From the previous post, the "static" and "const keywords were introduced briefly. Those keywords are complicated to use, as their behaviors are flexible under different situations. On the contrary, when they are brought in C++ class, the behaviors of them are pretty straightforward. In this post, I am going to talk about static members, const members, and static const members in C++ class and ho..
[Basic C++] 19 - Static and Const keywords in C++ 2020. 7. 14. The "static" and "const" keywords are fairly useful keywords when brought in the right place. When we create a variable in a certain scope, it only exists within the scope. On the other hand, a global variable is created at the beginning of a program and destroyed when the program ends. "static" keyword changes the behavior of a local variable to a global variable, thus, the static local variabl..
[Basic C++] 18 - Data Structure in C++ : Friend 2020. 7. 6. 1. Definition of "friend" There is a very convenient keyword in C++ OOP that you can give special permission to a target entity to access to another class, even if the entity is not inside the class. Only the class implementer can declare who its friends are but not vice versa. You can declare a friend function before its declaration because the compiler assumes as if the function had been decla..
[Basic C++] 17 - Data Structure in C++ : Polymorphic class 2020. 6. 19. As I briefly explained at one of the earlier postings (2020/06/04 - [Programming/C++] - [Basic C++] 13 – Data Structure in C++ : What is a CLASS, definition, and explanation), polymorphism is one of the four major concepts of OOP. Polymorphism is often described as "One form with multiple functionalities", but it is not enough for someone who does not have a computer engineering background. We h..
[Basic C++] 16 - Data Structure in C++ : Class Virtual Function 2020. 6. 15. C++ class series : previous postings 2020/06/13 - [Programming/C++] - [Basic C++] 15 – Data Structure in C++ : Class Single Inheritance 2020/06/13 - [Programming/C++] - [Basic C++] 14 – Data Structure in C++ : Class Constructor and Destructor 2020/06/04 - [Programming/C++] - [Basic C++] 13 – Data Structure in C++ : What is a CLASS, definition, and explanation 1. Definition of Virtual Function A ..
[Basic C++] 15 – Data Structure in C++ : Class Single Inheritance 2020. 6. 13. Links to the previous posts about C++ class 2020/06/04 - [Programming/C++] - [Basic C++] 13 – Data Structure in C++ : Class 1/4 2020/06/13 - [Programming/C++] - [Basic C++] 13 – Data Structure in C++ : Class 2/4 This post is the third post of the C++ basic class series and I am going to talk about inheritance briefly in this post. Inheritance of class is one of the most important concepts when i..

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