Implemented Task1 and Task2 solutions

Task1/Task1/Program.cs

@@ -1,2 +1,22 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World!");
+Console.WriteLine("Вычисление квадратного корня");
+while (true)
+{
+    Console.Write("Введите число: ");
+    string? input = Console.ReadLine();
+
+    bool isInputNumeric = double.TryParse(input, out double inputNumber);
+    if (!isInputNumeric)
+    {
+        Console.WriteLine($"Ошибка: '{input}' не является числом");
+        continue;
+    }
+    if (inputNumber < 0)
+    {
+        Console.WriteLine("Ошибка: корень отрицательного числа вычислить невозможно");
+        continue;
+    }
+
+    double result = Math.Sqrt(inputNumber);
+    Console.WriteLine($"Результат вычислений: {result}");
+    Console.WriteLine();
+}

Task2/Task2.sln

@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.1.32407.343
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Task2Lib", "Task2\Task2Lib.csproj", "{E918BF0C-4A2D-4EB6-9A2E-C9C55AC741B0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Task2App", "Task2App\Task2App.csproj", "{1E07724A-EB97-4297-86F4-270DC319FA3F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{E918BF0C-4A2D-4EB6-9A2E-C9C55AC741B0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E918BF0C-4A2D-4EB6-9A2E-C9C55AC741B0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E918BF0C-4A2D-4EB6-9A2E-C9C55AC741B0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E918BF0C-4A2D-4EB6-9A2E-C9C55AC741B0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1E07724A-EB97-4297-86F4-270DC319FA3F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1E07724A-EB97-4297-86F4-270DC319FA3F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1E07724A-EB97-4297-86F4-270DC319FA3F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1E07724A-EB97-4297-86F4-270DC319FA3F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {246036BD-DB2E-4BEB-8ACD-D79B25B86A46}
+	EndGlobalSection
+EndGlobal

Task2/Task2/Calculations.cs

@@ -0,0 +1,7 @@
+namespace Task2Lib
+{
+    public static class Calculations
+    {
+        public static double AverageOf3(double num1, double num2, double num3) => (num1 + num2 + num3) / 3;
+    }
+}

Task2/Task2/Task2Lib.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Task2/Task2App/Program.cs

@@ -0,0 +1,21 @@
+Console.WriteLine("Вычисление среднего 3-ех чисел");
+while (true)
+{
+    double[] userNumbers = new double[3];
+
+    for (int i = 0; i < 3; i++)
+    {
+        Console.Write($"Введите {i + 1} число: ");
+        string? input = Console.ReadLine();
+        bool isInputNumeric = double.TryParse(input, out userNumbers[i]);
+        if (!isInputNumeric)
+        {
+            Console.WriteLine($"Ошибка: '{input}' не является числом");
+            i--;
+        }
+    }
+
+    double result = Task2Lib.Calculations.AverageOf3(userNumbers[0], userNumbers[1], userNumbers[2]);
+    Console.WriteLine($"Результат вычислений: {result}");
+    Console.WriteLine();
+}

Task2/Task2App/Task2App.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Task2\Task2Lib.csproj" />
+  </ItemGroup>
+
+</Project>