We are about to discuss the <string.h> header file in the C standard library. This header file provides a set of functions for manipulating strings (character arrays terminated by a null character ‘\0’) and memory blocks. I will explain the main functions in this header file in detail, including their purposes, parameters, return values, and … Read more
Understanding Linked Lists (C Language Implementation) 1. Basic Concepts of Linked Lists Linked List is a dynamic data structure composed of a series of nodes (Node), where each node contains: Data Field: stores the actual data Pointer Field: stores the memory address of the next node 2. Comparison of Linked Lists and Arrays Characteristics Array … Read more
In embedded system development, microcontroller crashes are one of the most troublesome issues. Once the system crashes, it can affect user experience at best, and at worst, it may lead to device damage or safety incidents. Common Causes of Crashes Classification of Causes Hardware Level • Unstable Power Supply: Voltage fluctuations, excessive ripple • Clock … Read more
Circular references in singletons are most likely to occur in logging modules and configuration management modules. If a circular reference is triggered during the construction phase, it can be guaranteed by the uniqueness of static variable initialization in C++11. The danger lies in triggering a circular reference during the destruction phase, which can lead … Read more
Scan the code to follow Chip Dynamics and say goodbye to “chip” congestion! Search WeChatChip Dynamics In the realm of C language, if pointers are the “swordsmen” who dominate the scene, then const is their “golden shield”. Today, we will unveil four magical protective combinations: const int *p, int *const p, int const *p, const … Read more
In ESP32 development, long-term operation testing (also known as stress testing or durability testing) is a critical step in verifying system stability and reliability. The following is a detailed strategy based on the characteristics of the ESP32, hardware selection, and practical testing experience, covering testing objectives, environment setup, monitoring metrics, problem analysis, and optimization directions: … Read more
“Assembly Language” 3rd Edition by Wang Shuang Chapter 5 [BX] and loop instructions (Page 121) Experiment 4 Usage of [bx] and loop (1) Program to sequentially transfer data 0 to 63 (3FH) to memory 0:200~0:23F. (2) Program to sequentially transfer data 0 to 63 (3FH) to memory 0:200~0:23F. The program can only use 9 instructions, … Read more
1. Run the following program, the output result is ( ). A.X0 B.X5 C.5 D.0 Knowledge points assessed: functions, local variables, and global variables. 2. Run the following program, the output result is ( ). A.3 B.4 C.9 D.16Knowledge points assessed: simulation.i=1, satisfies the while statement, runs t=1, i=3;i=3, satisfies the while statement, runs t=2, … Read more
Eight-legged essay learning website:https://www.chengxuchu.com Hello everyone, I am Chef, a programmer who loves cooking and has obtained a chef qualification certificate. In C++ interviews, you often encounter seemingly simple yet easily misunderstood questions. For example, “<span>std::vector</span> objects are on the heap or stack?” This is a point that many interviewers like to test, assessing your … Read more
Introduction In previous blog posts, we explored many practical techniques for calling C++ from C#. Today, we will continue to delve into “Zero-Copy Technology.” What is “Zero-Copy,” why is it crucial in high-performance scenarios, and how to correctly implement it during C# and C++ interoperability to avoid unnecessary data copying, maximize throughput, and reduce latency. … Read more