add HomeWork 15

HomeWork15/HomeWork15/HomeWork15.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34330.188
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HomeWork15", "HomeWork15\HomeWork15.csproj", "{5607D0A7-5E1D-4025-9672-75C4F5D66C28}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{5607D0A7-5E1D-4025-9672-75C4F5D66C28}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5607D0A7-5E1D-4025-9672-75C4F5D66C28}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5607D0A7-5E1D-4025-9672-75C4F5D66C28}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5607D0A7-5E1D-4025-9672-75C4F5D66C28}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {67CAC64B-8CCD-4EF8-A684-E4AE24EDED14}
+	EndGlobalSection
+EndGlobal

HomeWork15/HomeWork15/HomeWork15/AsyncReader.cs

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+namespace HomeWork15
+{
+    internal class AsyncReader
+    {
+        private async static Task<string> ReadHelloAsync()
+        {
+            string text;
+
+            using (var readHello = new StreamReader("Hello.txt"))
+            {
+                text = await readHello.ReadToEndAsync();
+            }
+
+            return text;
+        }
+
+        private async static Task<string> ReadWordAsync()
+        {
+            string text;
+
+            using (var readHello = new StreamReader("Word.txt"))
+            {
+                text = await readHello.ReadToEndAsync();
+            }
+
+            return text;
+        }
+
+        public async static Task<string> ConcatinationHelloWordAsync()
+        {
+            var textHello = await ReadHelloAsync();
+
+            var textWord = await ReadWordAsync();
+
+            return string.Join(' ', textHello, textWord);
+        }
+    }
+}

HomeWork15/HomeWork15/HomeWork15/HomeWork15.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>

HomeWork15/HomeWork15/HomeWork15/Program.cs

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+namespace HomeWork15
+{
+    internal class Program
+    {
+        async static Task Main(string[] args)
+        {
+            var task = Task.Run(() => AsyncReader.ConcatinationHelloWordAsync());
+
+            Console.WriteLine(task.Result);
+        }
+    }
+}