diff --git a/.gitignore b/.gitignore
index 71ab9a4..4709b0c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,4 +7,8 @@ target/
 **/*.rs.bk
 
 # MSVC Windows builds of rustc generate these, which store debugging information
-*.pdb
\ No newline at end of file
+*.pdb
+
+# Generated by the compiler
+/*.cpp
+/*.out
\ No newline at end of file
diff --git a/crates/codegen/src/cpp.rs b/crates/codegen/src/cpp.rs
index 6778a88..172d9e0 100644
--- a/crates/codegen/src/cpp.rs
+++ b/crates/codegen/src/cpp.rs
@@ -22,6 +22,8 @@ impl Codegen {
     }
 
     pub fn gen(&mut self, irs: Vec<IR>) {
+        self.emit(format!("// Auto-generated by hazure compiler version {}\n", env!("CARGO_PKG_VERSION")));
+
         for module in MODULE_INCLUDES {
             self.emit(format!("#include {}\n", module));
         }