Update app.py

app.py

@@ -1,4 +1,5 @@
 import gradio as gr
+from packaging import version
 import subprocess, tempfile, os, uuid, resource
 
 # --- Función principal --------------------------------------------------------
@@ -54,6 +55,13 @@ def compile_and_run(code: str, stdin: str = "") -> str:
         response += f"\n⚠️ STDERR\n{err}"
     return response.strip()
 
+# ----------  Compatibilidad Gradio 3.x / 4.x  ----------
+if version.parse(gr.__version__) >= version.parse("4.0.0"):
+    CodeInput   = gr.CodeEditor          # Nuevo componente
+    code_lang   = "c"                    # Ahora sí existe
+else:
+    CodeInput   = gr.Code                # Componente antiguo
+    code_lang   = "cpp"                  # 'c' no está en 3.x
 
 # --- UI en Gradio -------------------------------------------------------------
 title       = "Compilador C online (42 Edition)"