diff --git a/src/ast.cpp b/src/ast.cpp
index b2373a7..a97a72a 100644
--- a/src/ast.cpp
+++ b/src/ast.cpp
@@ -19,7 +19,10 @@ namespace AST {
 
     std::string Function::formatted() {
         std::stringstream out{ "" };
-        out << "Function() {\n";
+        out << this->m_name;
+        out << "() -> ";
+        out << this->m_return_ty->formatted();
+        out << " {\n";
         for (auto& statement : this->m_statements) {
             out << "  " << statement->formatted() << "\n";
         }
@@ -27,4 +30,14 @@ namespace AST {
         out << "}";
         return out.str();
     }
+
+    std::string FundamentalType::formatted() {
+        switch (this->m_ty) {
+        case FundamentalTypeKind::Int:
+            return "Int";
+        default:
+            return "Unknown";
+        }
+
+    }
 }
\ No newline at end of file
diff --git a/src/ast.h b/src/ast.h
index 6733f7a..79ec60e 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -12,7 +12,10 @@ namespace AST {
     };
 
     class Expression : public Node {};
-    class Type {};
+    class Type {
+    public:
+        virtual std::string formatted() = 0;
+    };
     class Statement : public Node {};
 
     class IntLiteralExpression : public Expression {
@@ -63,6 +66,7 @@ namespace AST {
         FundamentalTypeKind m_ty;
     public:
         FundamentalType(FundamentalTypeKind kind) : m_ty{ kind } {}
+        virtual std::string formatted() override;
     };
 }