update

app6-array/Program.cs

@@ -0,0 +1,24 @@
+internal class Program
+{
+    private static void Main(string[] args)
+    {
+        string[] names = {
+            "john", "jack", "mary", "mandy"
+        };
+
+        for (int i = 0; i < names.Length; i++)
+        {
+            Console.WriteLine(names[i]);
+        }
+        Console.WriteLine(new string('-', 15));
+
+        foreach (var n in names)
+        {
+            Console.WriteLine(n);
+        }
+        Console.WriteLine(new string('-', 15));
+
+        names.ToList().ForEach(n => Console.WriteLine(n));
+        Console.WriteLine(new string('-', 15));
+    }
+}

app6-array/app6-array.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <RootNamespace>app6_array</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>