01 The followingcannot be defined as a user identifier: A) man B) _0 C) _int D) sizeof Answer: D Explanation: Among the given options, sizeof is a keyword in C language used to calculate the number of bytes occupied by a data type or variable. Since keywords cannot be used as user identifiers, The naming … Read more
01 The number of actual parameters in the function call statement func is func(f2(v1, v2), (v3, v4, v5), (v6, max(v7, v8))); A) 3 B) 4 C) 5 D) 8 Answer: A Analysis: The first actual parameter is f2(v1, v2), which is the result of a function call. The second actual parameter is (v3, v4, v5), … Read more
In the C language, macro definitions are a very powerful tool that can help us simplify code, improve readability, and maintainability. This article will detail macro definitions in C, including their basic concepts, usage methods, and some common application scenarios. What is a Macro Definition? A macro definition is a preprocessor directive used for text … Read more
In C language, input and output are important ways for programs to interact with users.<span>scanf</span> and <span>printf</span> are the two most commonly used functions in C for handling input and output. This article will provide a detailed introduction to the usage of these two functions, along with code examples to help everyone understand. 1. printf … Read more
Click the blue text above: IoT Guesthouse to follow us In embedded C language interviews, in addition to basic syntax and data structures, some advanced features such as macro definitions, storage classes, and type modifiers will also be emphasized. These knowledge points not only test your mastery of syntax but also your understanding of the … Read more
Introduction: New students entering computer science often feel confused by the abundance of `#include <stdio.h>`: “It’s 2025, and the school is still teaching the ancient C language? Isn’t Java or Python better?” Today, we will dissect this classic debate—what languages should computer science students actually learn? I. C Language: The “Atomic Structure” of the Computer … Read more
An Introduction to Embedded System Programming with Python Introduction With the rapid development of the Internet of Things (IoT) and smart devices, embedded system programming has become increasingly important. Python, as an easy-to-learn and user-friendly programming language, is gradually gaining widespread application in embedded development. This article will guide you through an initial exploration of … Read more
In the world of embedded systems, “granularity” is not an abstract concept but a precise gauge that engineers use to control the pulse of the system. It requires us to be accurate to the millisecond in the time dimension, to manage memory down to the bit level, and to navigate modules in functional architecture, all … Read more
Developers working on embedded systems have certainly encountered issues such as tedious programming, difficult debugging, and lengthy log collection. Today, I would like to recommend a powerful tool—DAPLink—that provides a one-stop solution for programming, debugging, and serial logging, making the process incredibly smooth! What is DAPLink? In simple terms, DAPLink is firmware that runs on … Read more
1. Overview of Qt Embedded Development Qt/Embedded Linux (now known as Qt for Device Creation) is a version of Qt optimized for embedded systems, featuring the following characteristics: No need for the X Window System, using its own window system QWS (Qt Window System) Customizable compilation, removing unnecessary modules Supports multiple processor architectures (ARM, MIPS, … Read more