Update code_editor.py

code_editor.py

@@ -82,7 +82,14 @@ def render_code_editor(ace_theme):
         st.session_state.code = default_code
         st.session_state.prev_language = selected_lang
 
-    content = st_monaco(value="# Hello world", height="600px", language="markdown")
+    code1 = st_monaco(
+        value=st.session_state.code,
+        language=selected_lang.lower() if selected_lang != "C++" else "cpp",
+        height=400,
+        theme=ace_theme or "vs-dark",
+        placeholder=f"Start typing your {selected_lang} code…",
+        key=editor_key
+    )
 
     # ── ACE Code Editor ──────────────────────────────
     code = st_ace.st_ace(