Introduction In microcontroller programming, the use of local variables is fundamental for data manipulation within functions or code blocks. The lifecycle of local variables starts from their declaration and ends when the containing function or code block completes execution. During this process, local variables may be read and written multiple times to store and pass … Read more
Hello everyone! Today we are going to talk about one of the most powerful yet confusing features of the C language for beginners – pointers. Through several practical examples, let’s master this core concept step by step. A pointer is essentially a variable that stores a memory address. Imagine it like the house number, telling … Read more
Hello everyone, I am Teacher Xiao Yu! Today, I will lead you to explore a very interesting topic – the application of C language in graphics. As a programmer, being able to create stunning 3D worlds with code is a really cool thing! We will start with the basic principles of ray tracing and gradually … Read more
First, let’s pose a question: what do you think the output of the following code will be? /* A simple example code */ #include <stdio.h> int main(int argc, char const *argv[]) { int a = -10; int b = 10; int c = -3; int d = 3; printf("Result 1: %d\n", a%d); printf("Result 2: %d\n", … Read more
In the world of C programming, code safety and resource management have always been crucial topics. Today, we will focus on a feature that is expected to become an important part of future versions of C language: ‘defer’. We will explore how to apply this feature in existing tools and compilers, as well as its … Read more
Today, let’s talk about the C language. When I first started learning, I was also confused, thinking it seemed simple, but I encountered various problems when using it. After years of trial and error, I would like to share some of my insights with you. Here are examples of using selection statements in C language: … Read more
In the world of data structures, a HashMap is an efficient tool for storing and retrieving data. It stores data in the form of key-value pairs, allowing for insertions, deletions, and lookups to be performed in average constant time complexity. Today, we will implement a simple HashMap using the C programming language. 1. Introduction to … Read more
If you find this useful, pleaselike and share it; your encouragement is my motivation to create! 1. C Language Programming Exercise Description We have 10 integers, and we need to shift each integer to the right by one position, with the last integer moving to the first position. For example, the integer sequence: 1,2,3,4,5,6,7,8,9,10 After … Read more
In embedded system development and some fun electronic projects, using C language to control a buzzer to play simple scores is a very interesting practice. It allows hardware to “sound”, adding lively audio effects to our creations. Today, let’s delve into how to achieve this fun functionality. 1. Working Principle of the Buzzer Buzzers are … Read more
