Scan the code to follow Chip Dynamics and say goodbye to “chip” blockage! Search WeChatChip Dynamics The C language does not have a true string type; instead, it uses a character array + ‘\0’ (null character) to represent a string. Thus, <string.h> provides a group of “text wizards” (string functions) to help us manipulate these … Read more
CNC hardware used in C language executors (1) The available memory capacity of the macro executor is ((custom soft capacity) – (C language executor capacity)) (2) These display devices are VGA graphic devices. “16 colors”, “256 colors”, and “16 grayscale” refer to the number of colors that can be displayed simultaneously on the screen. Applications … Read more
Scan the code to follow Chip Dynamics and say goodbye to “chip” congestion! Search WeChatChip Dynamics Today, we are going to talk about the “little demon” of C language that people both love and hate—character arrays. It is like a “Transformers” in the programming world, capable of transforming into a gentle string or turning into … Read more
The C language can be considered an “ancient” programming language, and it is currently the mainstream programming language in embedded systems. Without C language, there would be no various embedded systems and operating systems today. Although C language is the foundation of programming development, to what extent have you mastered it? Let’s take a look … Read more
Follow+Star Public Account Number, don’t miss out on exciting content Source | Uncle Wheat Modbus is considered a classic communication protocol in the embedded field; however, efficiently implementing the Modbus protocol in resource-constrained embedded systems is often a significant challenge. This article introduces a lightweight C language library designed specifically for embedded systems—nanoModbus—to help developers … Read more
It is well known that in the field of embedded development, C has long dominated. Although with the development of the times, C++ and assembly language have gradually become more popular, C remains the cornerstone for understanding key concepts such as low-level hardware, memory management, and pointer operations. So, is it necessary to learn C … Read more
The Root of the Dilemma in Understanding Assembly Language For programmers who are “native” in C/C++, reading assembly code often encounters the following difficulties: Poor Readability: Assembly instructions have a low level of abstraction and lack the expressiveness of high-level languages. Lack of Context: Low-level details such as register operations and memory accesses obscure the … Read more
Optimization of Function Return Values and Register Usage in C Language In C language, functions are one of the fundamental building blocks of a program. Understanding how to effectively handle function return values and how to utilize registers for optimization is crucial for improving program performance. This article will detail these concepts and provide code … Read more
01 If there is an array int a[10];, the correct reference to the elements of the array a is A) a[10] B) a[3.5] C) a(5) D) a[10-10] Answer: D Explanation: For option A: Incorrect, the valid indices of the array are 0 to 9, a[10] is out of bounds and will lead to undefined behavior. … Read more
Memory Mapping Techniques and Application Examples in C Language In modern operating systems, memory mapping is an efficient method for file I/O operations. It allows programs to directly map files or devices into the process’s address space, enabling access to file contents as if they were memory. This technique is particularly effective when handling large … Read more