Introduction The Internet of Things (IoT) is a rapidly evolving field that involves the interconnection of various devices. The C language, as an efficient, flexible, and widely used programming language, plays a crucial role in IoT. This article will introduce the applications of C language in device communication and data processing, and provide code examples … Read more
File Operations in C Language: Opening, Reading, Writing, and Closing Files In C language, file operations are a very important topic. Through file operations, we can persist data to disk or read data from disk. This article will detail how to open, read, write, and close files in C language. 1. File Pointer Before performing … Read more
C Language Multi-File Programming: Header File Design and Modular Development In C language development, as project scale increases, the organization and management of code become particularly important. To enhance code readability, maintainability, and reusability, we often adopt a multi-file programming approach. This article will detail how to design header files and implement modular development, supported … Read more
The Development History of the C Language: Changes from C89 to C11 The C language is a widely used programming language that has undergone multiple standardizations since its inception in the early 1970s. This article will detail the development history of the C language, focusing on the significant changes between C89 and C11, and will … Read more
Generic Pointers in C: Characteristics and Applications of Void Pointers In C, pointers are a powerful tool that can effectively manipulate memory, control hardware, and implement data structures. One special type of pointer, the <span>void</span> pointer (also known as a generic pointer), plays an important role in programming. This article will detail the characteristics and … Read more
Pointers and Pointers to Pointers in C: Using Multilevel Pointers In C, pointers are a very important concept. They can be used not only to directly manipulate memory but also to implement complex data structures and algorithms. In this article, we will delve into the use of pointers and multilevel pointers (i.e., “pointers to pointers”). … Read more
In modern computing, multithreaded programming is a common technique that allows programs to execute multiple tasks simultaneously, thereby improving efficiency and responsiveness. The C language provides robust multithreading support through the POSIX threads (pthread) library. This article will detail how to create and manage threads in C, as well as how to synchronize them. 1. … Read more
Memory Management in C: Avoiding Memory Leaks and Dangling Pointers In C programming, memory management is a crucial topic. Since C provides direct manipulation of memory, programmers need to manually allocate and free memory. While this flexibility is powerful, it can also lead to common issues such as memory leaks and dangling pointers. This article … Read more
The C language is a powerful programming language widely used in the development of operating systems and embedded systems. It can interact directly with hardware and access low-level operating system functions through system calls. In this article, we will introduce what system calls are and how to use them in C to implement some basic … Read more
Error handling is an important topic in the C language. Since C does not support an exception handling mechanism, we typically use return values to indicate the result of a function’s execution, including success and failure. This article will detail how to handle errors in C, primarily through return values and some common practices. 1. … Read more