Today, let’s talk about character arrays in C language—this “text processor” in the programming world. Character arrays are like your word processor, helping you efficiently store and process text data. Mastering the use of character arrays will make your programming more flexible and powerful. Definition and Initialization of Character Arrays A character array is an … Read more
User Comments: @Scarlett_北冥雨夜: You should learn PHP first @Mr_HaiTwo: Expectation: Java, Reality: PHP, Python, C++, Shell, JS, HTML @Professor Liu from Qinhuai Hospital, 3rd Floor: C language is very deep @NereusP: I started learning with Xijia, so I know both C and Java @Why do you care what others think: I feel that C language … Read more
01 Program Structure Optimization 1. Program Writing Structure Although the writing format does not affect the quality of the generated code, certain writing rules should still be followed during actual programming. A clearly written program is beneficial for future maintenance. When writing programs, especially for statements like While, for, do…while, if…else, switch…case, and their nested … Read more
Porting C to the MCU (commonly known as microcontroller) 8051 began in the late 1980s. Objectively speaking, there are many challenges in porting C to the 8051 MCU. For example: · The 8051’s non-Von Neumann architecture (separate program and data memory spaces), along with additional bit-addressable memory space on the chip; · The on-chip data and … Read more
From: CoolShell Link: https://coolshell.cn/articles/5388.html Original: https://www.elpauer.org/2011/08/the-most-stupid-c-bug-ever/ This article is based on “The most stupid C bug ever” and is quite interesting, so I am sharing it with everyone. I believe that even if you are an expert, you could make such a bug. Let’s take a look at the bug made by the author. First, … Read more
2. Analysis from the Implementation Perspective (Compiled Code) Previously, we briefly understood the relationship between arrays and pointers from the perspective of program writing. Next, we will analyze this logic more deeply from the perspective of compilation implementation. int *int_pointer = int_array; lea -0x40(%rbp),%rax ; (%rbp) – 0x40 value of int_array mov %rax,-0x8(%rbp) ; -0x8(%rbp) … Read more
Introduction to C Language: Understanding Variables and Data Types The C language is a widely used programming language favored by developers for its efficiency and flexibility. For beginners, understanding variables and data types is the first step in learning C. This article will detail these fundamental concepts and provide code examples to help everyone better … Read more
1. What is a Hardware Driver Module In embedded systems, a hardware driver module acts like a bridge, connecting hardware devices on one end and upper-level software on the other, playing a crucial role in the entire system. In simple terms, a hardware driver module is a piece of program code specifically responsible for interacting … Read more
Implementing Peterson’s Algorithm for Mutual Exclusion in C Language After studying the section on process mutual exclusion, I thought I would try to implement it using user-level multithreading in C, which led to this article. Complete Code Peterson’s algorithm combines the single flag method and the double flag method to achieve true mutual exclusion for … Read more
Application Examples of C Language in Robot Control Introduction The C language is a powerful and flexible programming language widely used in various fields, including operating systems, embedded systems, and robot control. Due to its efficiency and portability, C has become an essential tool for robotic engineers. In this article, we will demonstrate how to … Read more