Follow+Star Public Account Number, don’t miss exciting contentSource | Embedded Software Guest House During the development of microcontroller projects, crashes are one of the most troublesome issues. A crash 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 … Read more
Familiarity with C++ means that students should be well-acquainted with std::unique_ptr, which is one of the smart pointers used in C++ to manage the lifecycle of dynamically allocated memory. Its core design principles are twofold: first, when a smart pointer goes out of scope, the memory it points to is automatically released, thus avoiding memory … Read more
VxWorks is one of the most widely used real-time operating systems (RTOS) in critical mission fields such as aerospace, defense, automotive, robotics, and industrial control. VxWorks is trusted for its determinism, safety certification, and security, and continues to evolve, providing developers with modern tools, container support, and flexible programming models. This guide provides a comprehensive … Read more
Pointers and Arrays: Stop Saying “Pointers are Just Addresses” This is the “appetizer” for embedded interviews, but 80% of candidates fail to provide a deep answer. For example, when asked about the “difference between pointers and arrays,” simply stating “the array name is a constant pointer” is insufficient; it must be explained in the context … Read more
1. Core Differences: Memory Structure Determines Performance CharacteristicsVector uses a contiguous memory layout, with elements arranged neatly like soldiers, supporting O(1) complexity for random access, but insertion and deletion require moving subsequent elements. List, on the other hand, resembles a pearl necklace, with each node connected by pointers, supporting O(1) complexity for insertion and deletion … Read more
Click the blue text to follow us Introduction “Before the program runs, the thought comes first.” In the realm of computer science, C++ occupies an important position with its unique philosophical system. C++ is a powerful yet complex programming language designed by Bjarne Stroustrup[1](Figure 1), which supports multiple programming styles. It is not only an … Read more
What is the essence of the C language? More than 90% of C engineers would definitely say it is pointers. Pointers are something that C engineers both love and hate. They are often a nightmare for many junior engineers, with terms like dangling pointers, wild pointers, and memory leaks… each one can make you lose … Read more
Memory leaks occur only in heap memory; they do not happen in stack memory. This is because stack memory automatically releases space after it has been allocated.What is heap memory? How is it stored? First, let’s introduce how heap memory is stored inC code. The function used to dynamically allocate heap memory inC code ismalloc, … Read more
Understanding HashMap in One Image The structure implemented using an array + linked list (chaining method) is shown below:Key Points Recap: HashMap uses an array (buckets), where each bucket stores a conflict linked list (or other structures). The hash function maps the key to a hash value, and then the modulus operation is used to … Read more
Continuing from the previous article, we will further discuss pointers in the C language.In C, pointers and arrays are two closely related but often confused concepts. When combined, they form two powerful tools:Pointer Arrays and Array Pointers. 1. Pointer Arrays: A Tool for Managing Collections of Data 1.1 What is a Pointer Array? A pointer … Read more