C#第2题

data/1..NET初阶/2.C#语法/2.C#文本值和变量/String.json

+{
+    "type": "code_options",
+    "author": "huanhuilong",
+    "source": "String.md"
+}
\ No newline at end of file

data/1..NET初阶/2.C#语法/2.C#文本值和变量/String.md

+# C# 字符串类型
+
+以下使用 C# 字符串类型的语句，哪些都是对的？
+
+一:
+
+```csharp
+Console.WriteLine("Hello, World!");
+```
+
+二：
+
+```csharp
+string helloworld1 = "Hello, World!";
+Console.WriteLine(helloworld1);
+```
+
+三:
+
+```csharp
+String helloworld2 = "Hello, World!";
+Console.WriteLine(helloworld2);
+```
+
+四:
+
+```csharp
+var helloworld3 = "Hello, World!";
+Console.WriteLine(helloworld3);
+```
+
+五:
+
+```csharp
+string $helloworld4 = "Hello, World!";
+Console.WriteLine($helloworld3);
+```
+
+六:
+
+```csharp
+string helloworld5 = 'Hello, World!';
+Console.WriteLine($helloworld5);
+```
+
+七:
+
+```csharp
+var helloworld6;
+helloworld6 = "Hello, World!";
+Console.WriteLine(helloworld6);
+```
+
+## 答案
+
+```csharp
+一、二、三、四
+```
+
+## 选项
+
+### A
+
+```csahrp
+一、二、三、五
+```
+
+### B
+
+```csharp
+一、二、四、六
+```
+
+### C
+
+```csharp
+一、三、四、七
+```
+
+### D
+
+```csharp
+三、四、五、七
+```
+
+### E
+
+```csharp
+二、四、五、六
+```

data/1..NET初阶/2.C#语法/2.C#文本值和变量/config.json

@@ -2,5 +2,7 @@
   "node_id": "csharp-052799fae6c2498f9ef2966925377631",
   "keywords": [],
   "children": [],
-  "export": []
+  "export": [
+      "String.json"
+  ]
 }
\ No newline at end of file

data/1..NET初阶/2.C#语法/2.C#文本值和变量/sample/Program.cs

+// See https://aka.ms/new-console-template for more information
+
+Console.WriteLine("Hello, World!");
+
+string helloworld1 = "Hello, World!";
+Console.WriteLine(helloworld1);
+
+String helloworld2 = "Hello, World!";
+Console.WriteLine(helloworld2);
+
+var helloworld3 = "Hello, World!";
+Console.WriteLine(helloworld3);
+
+string $helloworld4 = "Hello, World!";
+Console.WriteLine($helloworld3);
+
+string helloworld5 = 'Hello, World!';
+Console.WriteLine($helloworld5);
+
+var helloworld6;
+helloworld6 = "Hello, World!";
+Console.WriteLine(helloworld6);
\ No newline at end of file

data/1..NET初阶/2.C#语法/2.C#文本值和变量/sample/sample.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>