Day 1 Part 1

day1/part1/Program.cs

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+namespace part1;
+
+class Program
+{
+    static void Main(string[] args)
+    {
+        int sum = 0;
+
+        string letters = "abcdefghijklmnopqrstuvwxyz";
+
+        StreamReader sr = new StreamReader("input");
+        String line = sr.ReadLine();
+        //Continue to read until you reach end of file
+        while (line != null)
+        {
+            line = line.ToLower();
+
+            foreach(char letter in letters) {
+                line = line.Replace(letter.ToString(), string.Empty);
+            }
+
+            sum += Int32.Parse(line[0].ToString()) * 10;
+            sum += Int32.Parse(line.Last().ToString());
+
+            Console.WriteLine($"Line: {line} - Sum: {sum}");
+            line = sr.ReadLine();
+        }
+        //close the file
+        sr.Close();
+
+        Console.WriteLine($"Total Sum: {sum}");
+    }
+}

day1/part1/part1.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>
+
+  <ItemGroup>
+    <None Update="input" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+</Project>

day1/part1/part1.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "part1", "part1.csproj", "{C09F35B1-BEBD-40E5-A3A9-21C31B5142F8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C09F35B1-BEBD-40E5-A3A9-21C31B5142F8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C09F35B1-BEBD-40E5-A3A9-21C31B5142F8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C09F35B1-BEBD-40E5-A3A9-21C31B5142F8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C09F35B1-BEBD-40E5-A3A9-21C31B5142F8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {D4410252-496A-49DA-8EF3-4B0141DE8941}
+	EndGlobalSection
+EndGlobal