Today, I will explain pointers. From basic to advanced, this article will combine practical applications to help you learn pointers while understanding what experts use pointers for!Long article warning! The entire text is about 5200 words, and this article is enough to learn pointers!Many people, like me when I first learned C language, are afraid … Read more
I remember when I first started working, a senior developer told me that if you are not familiar with longjmp and setjmp, you shouldn’t call yourself a C language expert. At that time, I was skeptical, but to advance my skills, I spent some time learning how to use longjmp and setjmp. Later, I realized … Read more
Function pointers are a powerful feature in the C programming language, allowing programs to pass, store, and dynamically call functions as data, providing great flexibility in code design. This article will systematically explain function pointers from their definition syntax, basic usage to advanced applications (callback mechanisms, state machines, plugin systems, object-oriented simulation), combining core insights … Read more
This article provides a detailed analysis of declarations in the C language, progressing step by step to thoroughly resolve this challenging topic. It is highly recommended to bookmark it. Pre-Class Question? What does the following declaration mean? char *const *(*next)(); First, give your answer. The standard answer will gradually become clear throughout this article’s step-by-step … Read more
01Hook FunctionsHook functions are predefined hooks in a program that allow you to attach or register a hook function when needed, making it available for the target.If there are no hooks, you can also obtain function pointers to encapsulate functions, but this can only be attached before or after the function runs, not during its … Read more
1 Object-Oriented C Object-oriented languages are closer to human thinking patterns, significantly reducing code complexity while enhancing code readability and maintainability. Traditional C code can also be designed to be readable, maintainable, and of lower complexity. This article will illustrate this with a practical example. 2 Basic Knowledge 2.1 Structures In addition to providing basic … Read more
For more exciting content, please click the blue text above to follow me! Continuing from the previous article《C Language Textbook: A Summary of Pointer Applications, Sharing the Differences Between Various Applications, and Unraveling the Mysteries of Pointer Usage（1）》 where we shared part of the content, this article continues. The table below summarizes the applications of … Read more
In C language, functions are also a type of “object”, which have addresses in memory. Therefore, it is possible to define pointers to functions, which can be used for dynamic calls, callback handling, building function tables, etc. Mastering function pointers is key to understanding the “low-level abstraction” and “modular programming” in C language. 1. Basic … Read more
1. The typedef Keyword In C language, the typedef keyword is used to define a new name (alias) for an existing data type. It does not create a new data type but provides a more readable and concise identifier for existing types, thereby improving code readability and maintainability. The basic syntax of typedef is very … Read more
1. Static Functions, Const Functions, and Virtual Functions Static Functions Static functions cannot be defined as virtual functions. They belong to the class itself, not to instances of the class, and do not have a <span>this</span> pointer. Virtual function calls depend on the object’s virtual function table, requiring the <span>this</span> pointer for location, while static … Read more