且运算和IF用例
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parent
de72242125
commit
0c90bca6c0
@ -7,6 +7,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HelloWorld", "HelloWorld\He
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "intVariable", "intVariable\intVariable.csproj", "{E4F0A953-68EB-4231-AE4C-040E1A13747A}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "doif", "doif\doif.csproj", "{D927AAFB-7F50-43BE-B3E1-62364060B642}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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@ -21,6 +23,10 @@ Global
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{E4F0A953-68EB-4231-AE4C-040E1A13747A}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{E4F0A953-68EB-4231-AE4C-040E1A13747A}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{E4F0A953-68EB-4231-AE4C-040E1A13747A}.Release|Any CPU.Build.0 = Release|Any CPU
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{D927AAFB-7F50-43BE-B3E1-62364060B642}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{D927AAFB-7F50-43BE-B3E1-62364060B642}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{D927AAFB-7F50-43BE-B3E1-62364060B642}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{D927AAFB-7F50-43BE-B3E1-62364060B642}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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6
doif/App.config
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6
doif/App.config
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="utf-8" ?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" />
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</startup>
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</configuration>
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47
doif/Program.cs
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47
doif/Program.cs
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using System;
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class LogicalAndDemo
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{
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static void Main()
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{
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// 提示用户输入年龄
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Console.Write("请输入您的年龄: ");
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string ageInput = Console.ReadLine();
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// 尝试将输入转换为整数类型
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int age;
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bool isValidAge = int.TryParse(ageInput, out age);
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// 提示用户是否同意条款
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Console.Write("您是否同意条款？ (yes/no): ");
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string agreement = Console.ReadLine();
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// 判断用户是否同意条款（忽略大小写）
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bool isAgreed = agreement.ToLower() == "yes";
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/*
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* 使用逻辑与运算符 `&&` 来检查所有条件是否都满足：
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* 1. 年龄输入是否有效
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* 2. 用户是否同意条款
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* 3. 年龄是否在18到100岁之间
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*
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* 只有当所有条件都为 true 时，才执行欢迎逻辑
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* 否则，执行拒绝逻辑
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*/
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if (isValidAge && isAgreed && age >= 18 && age <= 100)
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{
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Console.WriteLine("欢迎加入！");
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}
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else
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{
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Console.WriteLine("抱歉，您无法加入。");
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}
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/*
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* 总结：
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* - `&&` 是逻辑与运算符，用于布尔表达式的条件判断
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* - 具有短路行为，如果左边的表达式为 false，右边的表达式不会被评估
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* - 常用于需要所有条件都为 true 时才执行某些操作的场景
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*/
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}
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}
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33
doif/Properties/AssemblyInfo.cs
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33
doif/Properties/AssemblyInfo.cs
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// 有关程序集的一般信息由以下
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// 控制。更改这些特性值可修改
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// 与程序集关联的信息。
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[assembly: AssemblyTitle("doif")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("doif")]
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[assembly: AssemblyCopyright("Copyright © 2024")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// 将 ComVisible 设置为 false 会使此程序集中的类型
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//对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型
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//请将此类型的 ComVisible 特性设置为 true。
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[assembly: ComVisible(false)]
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// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
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[assembly: Guid("d927aafb-7f50-43be-b3e1-62364060b642")]
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// 程序集的版本信息由下列四个值组成:
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//
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// 主版本
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// 次版本
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// 生成号
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// 修订号
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//
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]
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53
doif/doif.csproj
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53
doif/doif.csproj
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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{D927AAFB-7F50-43BE-B3E1-62364060B642}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<RootNamespace>doif</RootNamespace>
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<AssemblyName>doif</AssemblyName>
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<TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
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<Deterministic>true</Deterministic>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Net.Http" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="App.config" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>
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