1. The Basic Relationship Between const and Pointers In C, the combination of the const keyword with pointers can create a powerful type safety protection mechanism. Depending on the position of const, four different pointer types can be generated: int a = 10; int b = 20; // 1. Pointer to a constant const int … Read more
Today, let’s talk about one-dimensional arrays in C language—this “data treasure trove” in the programming world. A one-dimensional array is like your personal library, helping you store and manage a large amount of data in an orderly manner. Mastering the principles and usage of one-dimensional arrays will make your programming more efficient and precise. The … Read more
#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