--- title: "Youwei Chen (@Yuk1Juda1) | Hashnode" description: "Youwei Chen (@Yuk1Juda1) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@Yuk1Juda1" --- @Yuk1Juda1 # Youwei Chen @Yuk1Juda1 · Joined January 2025 ### [指针与运用(Pointers):](https://cpp-blog.hashnode.dev/pointers?utm_source=hashnode&utm_medium=feed) 引用运算符(&): 基本引用 #include int main() { int a = 10; int& ref = a; // ref 是 a 的引用，ref 和 a 绑定在一起 ref = 20; // 修改 ref 也会修改 a std::cout << "a: " << a << std::endl; // 输出 20 return 0; } 函数参数中的作用传递变量的引用： #inc... 4 min read · [cpp-blog.hashnode.dev](https://cpp-blog.hashnode.dev/pointers?utm_source=hashnode&utm_medium=feed) [Mar 10, 2025](https://hashnode.com/posts/pointers/67cef2b4c50b400fe465bd6f) ### [C++函数 (functions)](https://cpp-blog.hashnode.dev/c-functions?utm_source=hashnode&utm_medium=feed) 函数声明：函数声明告诉编译器函数的名称，返回类型和参数列表，但不包含函数体。作用：让编译器知道函数的存在，以便在定义之前使用（通常用于头文件）允许代码结构更加清晰（函数声明在前，定义在后）。语法：返回类型函数名(参数列表); 函数定义：函数定义包括函数的完整实现，即包括函数体（代码逻辑）。语法：返回类型函数名(参数列表) { // 函数体（实现代码） return 返回值; // (如果返回类型不是 \`void\`) } 函数声明和定义的分离：通... 1 min read · [cpp-blog.hashnode.dev](https://cpp-blog.hashnode.dev/c-functions?utm_source=hashnode&utm_medium=feed) [Mar 10, 2025](https://hashnode.com/posts/c-functions/67ceb150928177a5f3ba4f17) ### [C++数组和向量：](https://cpp-blog.hashnode.dev/c?utm_source=hashnode&utm_medium=feed) 数组 (Array) 数组是固定大小的连续内存块，在编译时确定大小。它们在内存中是静态分配的，意味着大小不可改变。声明和初始化数组 int arr\[5\] = {1, 2, 3, 4, 5}; //声明并初始化一个包含5个整数数组优点：性能高：数组的访问速度较快，因为它们在内存中是连续的。内存占用少：没有额外的开销缺点：大小固定: 一旦声明，数组的大小不可更改。不便于扩展：如果需要增加元素，必须手动创建一个新的更大的数组并复制原数组的内容。 std::array (... 1 min read · [cpp-blog.hashnode.dev](https://cpp-blog.hashnode.dev/c?utm_source=hashnode&utm_medium=feed) [Mar 5, 2025](https://hashnode.com/posts/c/67c85f65c967093aa08bc8cf) ### [Polymorphism in C++](https://cpp-blog.hashnode.dev/polymorphism-in-c?utm_source=hashnode&utm_medium=feed) What is Polymorphism? Polymorphism means “many forms“. In C++, it allows a single function or operator to behave differently depending on the context in which it is used. For example, a function makeSound() can behave differently for a Dog object and... 3 min read · [cpp-blog.hashnode.dev](https://cpp-blog.hashnode.dev/polymorphism-in-c?utm_source=hashnode&utm_medium=feed) [Feb 10, 2025](https://hashnode.com/posts/polymorphism-in-c/67aa3069f7b066f580144285) ### [Understanding Header Files and Source Files in C++](https://cpp-blog.hashnode.dev/understanding-header-files-and-source-files-in-c?utm_source=hashnode&utm_medium=feed) Header Files (.h) Header files are used to declare the interface of our code. Source Files (.cpp): In C++, a source file contain implementations of functions/classes. Purpose of Header Files: Declare, not define: Header files declare what functions,... 3 min read · [cpp-blog.hashnode.dev](https://cpp-blog.hashnode.dev/understanding-header-files-and-source-files-in-c?utm_source=hashnode&utm_medium=feed) [Jan 25, 2025](https://hashnode.com/posts/understanding-header-files-and-source-files-in-c/67952373d68ec7d17d053162)