Adding assig4

4/ClassLibraryProjects/StringLibrary/StringLibrary.cs

@@ -0,0 +1,14 @@
+namespace UtilityLibraries;
+
+public static class StringLibrary
+{
+    public static bool StartsWithUpper(this string? str)
+    {
+        if (string.IsNullOrWhiteSpace(str))
+        {
+            return false;
+        }
+
+        return char.IsUpper(str[0]);
+    }
+}

4/ClassLibraryProjects/StringLibrary/StringLibrary.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <RootNamespace>UtilityLibraries</RootNamespace>
+    <AssemblyName>UtilityLibraries</AssemblyName>
+  </PropertyGroup>
+
+</Project>