#include <stdio.h> #include <string.h> #include <ctype.h> typedef void (*funcPtr)(char *); // 1. Remove leading and trailing whitespace (similar to Python's strip) void trim(char *str) { int i = 0, j; int len = strlen(str); // Remove leading whitespace while (isspace(str[i])) i++; // Remove trailing whitespace j = len – 1; while (j >= 0 && … Read more
Implementing Multiprocessing in C: fork and exec In operating systems, multiprocessing is an important mechanism that allows multiple processes to run simultaneously, thereby improving the efficiency and responsiveness of programs. In C language, <span>fork()</span> and <span>exec()</span> system calls are commonly used to create and manage new processes. This article will detail their working mechanisms and … Read more
C Language Interview: Signal Handling and Inter-Process Communication In modern operating systems, inter-process communication (IPC) and signal handling are two very important concepts. In C language interviews, examiners often focus on these two topics as they involve crucial aspects of system programming. This article will detail the basic concepts of signal handling and inter-process communication, … Read more
C Language Code Analysis Tool: Using SonarQube In modern software development, code quality is one of the critical factors for ensuring project success. To help developers improve code quality, SonarQube is widely used as a powerful static code analysis tool. This article will detail how to use SonarQube for code analysis in C language projects. … Read more
In embedded development, struct encapsulation function pointers are powerful tools for improving code quality, but a flawed design can lead to disaster. This article guides you through correcting typical error cases and mastering engineering-level implementation solutions. 1. Analysis of Typical Error Cases The code provided by the developer has three fatal issues: // Problematic code … Read more
Storage Classes in C: auto, extern, and static In C, the storage class of a variable determines its lifecycle, visibility, and initial value. In this article, we will delve into three main storage classes: <span>auto</span>, <span>extern</span>, and <span>static</span>. We will illustrate the characteristics and usage of each storage class through code examples. 1. <span>auto</span> Definition … Read more
Dynamic Memory Allocation in C: malloc and free In C programming, dynamic memory allocation is an important concept. It allows programs to request and release memory as needed during runtime. <span>malloc</span> and <span>free</span> are the two most commonly used functions for dynamic memory management. In this article, we will provide a detailed introduction to the … Read more
When assigning values to registers using the C language, bit manipulation techniques in C are often required.C language bit manipulation methods. Clearing a specific bit in a register Assuming ‘a’ represents the register, which already has a value. If we want to clear a specific bit while keeping other bits unchanged, the code is as … Read more
Implementing a Simple Encryption and Decryption Tool in C In today’s article, we will implement a simple encryption and decryption tool using the C programming language. This tool is based on a very basic character substitution algorithm, allowing users to input a plaintext, encrypt it using a defined method, and then decrypt it back through … Read more
Macro Optimization in C Language: Reducing Code Duplication In the C language, macros are a powerful feature that allows for code replacement at compile time, enabling some automated processing. Using macros can effectively reduce code duplication and improve development efficiency. This article will introduce you to macros in C and how to use them to … Read more