Synchronization of old projects

Part1

C#入门/Lesson12_条件运算符练习/Lesson12_条件运算符练习.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

C#入门/Lesson12_条件运算符练习/Program.cs

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+using System;
+namespace Lesson12_练习题
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            #region 口算
+            //请回答一下问题：
+            //我的年龄（18）>你们的年龄（22）false
+            //兔子的速度（3m/s）<乌龟的速度（1m/s）false
+            //狗的重量（50kg）<兔子的重量（2kg）false
+            //我有钱（10元）==你有钱（10元）true
+            #endregion
+
+            #region 求打印结果
+            //bool b = true;
+            //console.WriteLine(b != true); false
+            //console.WriteLine(10==10); ture
+            //console.WriteLine(10 > 20); false
+            //console.WriteLine(10 <= 20); true
+            //console.WriteLine(10 <= 10); true
+            #endregion
+
+            #region 综合练习
+            //bool gameOver,startGame;
+            //int a = 10,b = 15;
+            //gameOver = a > (b - 5);
+            //startGame = gameOver == (b > (a + 5));
+            //console.WriteLine("stratGame = " + startGame);
+            //true
+            #endregion
+        }
+    }
+}