...

compiler/.gitignore

@@ -1,4 +1,4 @@
 .idea
 bin
 obj
-out.c
+.build

compiler/Program.cs

@@ -1,7 +1,8 @@
-using Compiler;
+using System.Diagnostics;
-
+using Compiler;
-const string fileName = "test.nub";
 
+foreach (var fileName in args)
+{
     var file = File.ReadAllText(fileName);
 
     var tokens = Tokenizer.Tokenize(fileName, file, out var tokenizerDiagnostics);
@@ -42,6 +43,14 @@ if (typeCheckerDiagnostics.Any(x => x.Severity == DiagnosticSeverity.Error))
 
     var output = Generator.Emit(typedAst);
 
-File.WriteAllText("out.c", output);
+    Directory.Delete(".build", recursive: true);
+    Directory.CreateDirectory(".build");
+
+    var outFilePath = Path.Combine(".build", Path.ChangeExtension(fileName, "c"));
+    File.WriteAllText(outFilePath, output);
+
+    Process.Start("gcc", ["-Og", "-g", "-c", "-o", Path.ChangeExtension(outFilePath, "o"), outFilePath]);
+}
+
 
 return 0;