1. Initial Impressions of Structures in C and C++ A structure (struct) can encapsulate different types of data together, forming a new, more complex data type. For example, in C, if we want to describe a student’s information, such as name, age, and score, we can define a structure like this: struct Student { char … Read more
Classes and objects in C++ are core concepts of Object-Oriented Programming (OOP), providing features such as encapsulation, inheritance, and polymorphism. Below is a detailed introduction to constructors, destructors, and operator overloading: 1. Basics of Classes and Objects A class is a user-defined data type that encapsulates data (member variables) and operations (member functions). An object … Read more
Detailed Explanation of GESP C++ Level 2 Certification Standards 1. Computer Storage and Networking Knowledge Point Description ROM, RAM, Cache: Functions and differences of Read-Only Memory, Random Access Memory, and Cache Memory Classification of Computer Networks: Wide Area Network (WAN), Metropolitan Area Network (MAN), Local Area Network (LAN) TCP/IP Four-Layer Model and OSI Seven-Layer Model: … Read more
In the last article, we introduced how containers use std::allocator. But what if we want to use std::allocator directly?Typically, we do not use std::allocator methods directly, but rather through a utility class (pseudo code below, Code Example 1): // Code Example 1 namespace std { template<class Alloc> struct allocator_traits { // Alloc is usually template<class … Read more
C++ unique_ptr Exclusive Ownership Management In modern C++, memory management is an important topic. Traditional manual memory management can easily lead to issues such as memory leaks and dangling pointers. To simplify this process, C++11 introduced smart pointers, among which <span>std::unique_ptr</span> is a very useful tool that provides exclusive ownership features. What is unique_ptr? <span>std::unique_ptr</span> … Read more
C++ Advanced: In-Depth Understanding of Virtual Functions, Inheritance, and Polymorphism In C++ object-oriented programming, inheritance and polymorphism are two core concepts. Today, we will delve into several important features closely related to polymorphism in C++: virtual functions, the <span>virtual</span> keyword, the <span>override</span> keyword, multiple inheritance, and virtual inheritance. These topics are key to understanding the … Read more
Here is a simple summary of some programming mistakes that C++ beginners often make, providing a reference for newcomers. 1. Some keywords are unnecessarily repeated in the cpp file For C++ classes, some keywords only need to be written in the .h file and do not need to be repeated in the cpp file, such … Read more
Practical Analysis of C++ Type Traits Programming In C++, type traits are a powerful tool that allows us to query and manipulate type information at compile time. By using type traits, we can achieve more flexible and reusable code. This article will provide a detailed introduction to type traits in C++, including their basic concepts, … Read more
Introduction to C++ Graphical User Interface Development A graphical user interface (GUI) is an essential component of modern software applications. C++, as a powerful programming language, offers various libraries and frameworks to assist developers in creating graphical user interfaces. In this article, we will introduce how to use the Qt framework for C++ GUI development … Read more
String manipulation is commonly used in daily programming, such as searching, replacing, comparing, and inserting. Below, I will introduce some operations in the C++ environment that I can run on my machine. Searching using the function str.find() Replacing using str.replace(). Note that Chinese characters are three bytes. Comparing using str.compare() Inserting using str.insert() The above … Read more