1 files changed, 4 insertions, 0 deletions
diff --git a/src/lexer.cc b/src/lexer.cc
index 6b10410..00ff600 100644
--- a/src/lexer.cc
+++ b/src/lexer.cc
@@ -133,5 +133,9 @@ Lexer::scan_token(void)
   case '\n':
     m_line++;
     break;
+
+  default:
+    printf("[-] Error: Unexpected character %c in line %lu\n", c, m_line);
+    break;
   }
 }