Header Files

Understanding C Language Header Files and Macro Definitions: Grasping #include, #define, and ‘Include Guards’

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Understanding C Language Header Files and Macro Definitions: Grasping #include, #define, and 'Include Guards'

⭐Understanding C Language Header Files and Macro Definitions: Grasping <span>#include</span> and <span>#define</span> and ‘Include Guards’ Author: IoT Smart Academy Continuing from previous comprehensive projects: We have already used the <span>student.h / student.c / main.c</span> multi-file structure, and have also written #ifndef STUDENT_H #define STUDENT_H … #endif However, many students actually just “copy and use” without … Read more

A Beginner’s Guide to Microcontroller Programming — Understanding the Structure of C Code Files Using main.c/.h as an Example

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“ This article serves as preparatory content for beginners in microcontroller development, explaining the structure of C language code files using main.c/.h as an example, to help newcomers quickly understand C language for microcontroller programming.” There are only two types of C language code files: source files with a .c suffix and header files with … Read more

Understanding C++ Preprocessor Directives

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IntroductionWe have finally arrived at the section related to C++ syntax. We will first introduce one of the most unique, magical, powerful yet also the most problematic, bizarre, and ugly parts of C++ syntax—preprocessor directives, especially macros, and we will use the important application of header files to glimpse some usage methods of preprocessor directives.Main … Read more

Interpretation of Google C++ Style Guide Series Part 1 (Header Files)

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This series of articles is an interpretation of the original text, adding some personal insights and supplementing actual code examples to aid understanding – Original text link C++ Version The target version of this Google C++ style guide is C++20, so it will not cover features of C++23. Header Files Typically, each <span>.cc</span> file should … Read more

MiHoYo C++ Interview: Header Files and Solutions to Circular Inclusion

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MiHoYo C++ Interview: Header Files and Solutions to Circular Inclusion

Every beginner in C programming starts with the first line of code almost always being<span>#include <stdio.h></span>. Initially, we mostly “copy the cat,” until we encounter issues like “undeclared identifier<span>printf</span>,” “redefinition,” and “linker errors,” realizing that header files are far from just a “collection of code snippets.” This article will systematically break down the essence and … Read more

Fundamental Concepts of C++: Header Files, Namespaces, and Line Break Output

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Fundamental Concepts of C++: Header Files, Namespaces, and Line Break Output

Header Files C++ provides various header files, each containing the essential functionalities required for the program to work correctly. We have already seen the input-output handling related to the <iostream> header file in the first C++ program. #include &lt;iostream&gt;using namespace std;int main(){ cout &lt;&lt; "Hello world!"; return 0;} #include is used to add standard or … Read more

Embedded C Language Programming

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Embedded C Language Programming

The Relationship Between .h Files and .c Files When referring to the programs of experts, I found that the strict programs written by others all include a “KEY.H” file, which defines the functions used in the .C file, such as Keyhit(), Keyscan(), etc.The .H file is a header file, probably meaning ‘Head’, which is necessary … Read more

Embracing Modern C++: Moving Away from Legacy Headers to New Features and Namespaces

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Embracing Modern C++: Moving Away from Legacy Headers to New Features and Namespaces

In the process of standardizing and developing C++, the standards committee made significant reforms to the header file system to distinguish it from C and introduce new features. Continuing to use legacy header files not only appears outdated but also means you cannot utilize many safer and more powerful new features. This article aims to … Read more

C++ Library File and Header File Writing Tutorial

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C++ Library File and Header File Writing Tutorial

This article introduces how to generate library files on a Linux system and how to write header files to use the library functions. 1. Writing Library Files As we know, in a C++ project, the file containing the main() function will generate an executable program upon compilation. On the other hand, the code that does … Read more

Function Calls in C Language

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Function Calls in C Language

There are generally two ways to call a function: one is by value, where the formal parameters do not affect the actual parameters, and the other is by reference, where the formal parameters can affect the actual parameters. Passing by Value   Passing by value means passing the value of the actual parameter into the function … Read more