diff --git a/examples/c/src/c.rustemo b/examples/c/src/c.rustemo
index 7f5d5e35..f23d8501 100644
--- a/examples/c/src/c.rustemo
+++ b/examples/c/src/c.rustemo
@@ -162,6 +162,13 @@ Statement:
 ForInitClause: ";" {None} | Expression ";" {ForInitWithExpression} | Declaration {ForInitWithDeclaration};
 
 
+// Layout - comments, whitespaces.
+Layout: LayoutItem*;
+LayoutItem: WS | Comment;
+Comment: '/*' Corncs '*/' | CommentLine;
+Corncs: Cornc*;
+Cornc: Comment | NotComment | WS;
+
 terminals
 
 Ampersand: '&';
@@ -251,5 +258,12 @@ Volatile: "volatile";
 While: 'while';
 
 Num: /[+\-]?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+\-]?\d+)?/;
-Identifier: /\p{XID_Start}\p{XID_Continue}*/;
+Identifier: /[a-zA-Z_][0-9a-zA-Z_]*/;
 StringLiteral: /"[^"]*"/;
+
+// Layout terminals
+WS: /\s+/;
+CommentLine: /\/\/.*/;
+NotComment: /((\*[^\/])|[^\s*\/]|\/[^\*])+/;
+BCommentBegin: '/*';
+BCommentEnd:  '*/';
diff --git a/examples/c/src/main.rs b/examples/c/src/main.rs
index e7a11a96..db9080ec 100644
--- a/examples/c/src/main.rs
+++ b/examples/c/src/main.rs
@@ -1,3 +1,12 @@
+use rustemo::{Parser, rustemo_mod};
+
+rustemo_mod!(c, "/src/");
+rustemo_mod!(c_actions, "/src/");
+
+use c::CParser;
+
 fn main() {
-    println!("Hello, world!");
+    let mut parser = CParser::new();
+    let forest = parser.parse_file("binary_tree.c");
+    println!("{forest:?}");
 }