120 lines
2.8 KiB
C#
120 lines
2.8 KiB
C#
using System;
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namespace Lesson04
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{
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class Program
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{
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static void Main(string[] args)
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{
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// ========== 方法调用 ==========
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Console.WriteLine("=== 方法 ===");
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SayHello("无言势");
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int sum = Add(10, 20);
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Console.WriteLine($"10 + 20 = {sum}");
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// 带默认参数
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Greet();
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Greet("VRC");
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// ========== 类和对象 ==========
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Console.WriteLine("\n=== 类和对象 ===");
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Person p1 = new Person("无言势", 25);
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Person p2 = new Person("玩家A", 30);
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p1.SayHi();
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p2.SayHi();
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// ========== 静态方法 ==========
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Console.WriteLine("\n=== 静态方法 ===");
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int result = MathHelper.Add(100, 200);
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Console.WriteLine($"100 + 200 = {result}");
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double pi = MathHelper.GetPI();
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Console.WriteLine($"PI ≈ {pi}");
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// ========== 面向对象练习 ==========
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Console.WriteLine("\n=== 麦克风类 ===");
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Microphone mic = new Microphone("USB麦克风", true);
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mic.ToggleListening();
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mic.ToggleListening();
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Console.ReadLine();
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}
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// ========== 方法定义 ==========
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static void SayHello(string name)
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{
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Console.WriteLine($"你好, {name}!");
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}
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static int Add(int a, int b)
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{
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return a + b;
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}
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static void Greet(string name = "World")
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{
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Console.WriteLine($"Hello, {name}");
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}
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}
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// ========== 类定义 ==========
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class Person
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{
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public string name;
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public int age;
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// 构造函数
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public Person(string name, int age)
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{
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this.name = name;
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this.age = age;
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}
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public void SayHi()
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{
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Console.WriteLine($"我是{name}，今年{age}岁");
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}
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}
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// 静态类
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static class MathHelper
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{
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public static int Add(int a, int b)
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{
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return a + b;
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}
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public static double GetPI()
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{
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return 3.14159;
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}
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}
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// 麦克风类 - 结合项目练习
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class Microphone
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{
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private string name;
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private bool isListening;
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public Microphone(string name, bool isListening)
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{
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this.name = name;
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this.isListening = isListening;
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}
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public void ToggleListening()
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{
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isListening = !isListening;
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if (isListening)
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{
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Console.WriteLine($"[{name}] 开始监听...");
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}
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else
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{
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Console.WriteLine($"[{name}] 停止监听");
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}
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}
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}
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}
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