diff --git a/src/main/java/TP2/Main.java b/src/main/java/TP2/Main.java
index 44f7df0..96d430d 100644
--- a/src/main/java/TP2/Main.java
+++ b/src/main/java/TP2/Main.java
@@ -47,16 +47,16 @@ public class Main {
       // Pretty-print the program (to debug parsing)
       System.err.println("todo " + ast);
 
-      //System.out.println("\n\n PRETTYPRINTER : \n--------------\n" + ast.prettyprinter() + "\n--------------\nFIN PRETTYPRINTER");
+      System.out.println("\n\n PRETTYPRINTER : \n--------------\n" + ast.prettyprinter() + "\n--------------\nFIN PRETTYPRINTER");
 
       // Verify the program semantic
 
       // Generate the intermediate representation
       System.out.println("todo");
 
-      ProgramLLVMImpl astLLVM = ast.toLLVM();
+      //ProgramLLVMImpl astLLVM = ast.toLLVM();
 
-      System.out.println("\n\n PRETTYPRINTER : \n--------------\n" + astLLVM.prettyprinter() + "\n--------------\nFIN PRETTYPRINTER");
+      //System.out.println("\n\n PRETTYPRINTER : \n--------------\n" + astLLVM.prettyprinter() + "\n--------------\nFIN PRETTYPRINTER");
 
       
 
diff --git a/src/main/java/TP2/asd/Interface.java b/src/main/java/TP2/asd/Interface.java
index 325b480..e920987 100644
--- a/src/main/java/TP2/asd/Interface.java
+++ b/src/main/java/TP2/asd/Interface.java
@@ -45,6 +45,7 @@ public interface Interface{
     public interface Expression {
         public <H,S> S accept(ExprVisitor<H,S> v, H h);
         public String prettyprinter(); 
+        public DefineLLVM toLLVM();
     }
 
     public interface ExprVisitor<H,S> {
diff --git a/src/main/java/TP2/asd/Program.java b/src/main/java/TP2/asd/Program.java
index aa26c15..9c80a2e 100644
--- a/src/main/java/TP2/asd/Program.java
+++ b/src/main/java/TP2/asd/Program.java
@@ -73,6 +73,12 @@ public class Program{
         public String prettyprinter(){
             return c+"";
         }
+
+        @Override
+        public DefineLLVM toLLVM() {
+            // TODO Auto-generated method stub
+            throw new UnsupportedOperationException("Unimplemented method 'toLLVM'");
+        }
     }
     
     public static record BinopExpressionImp(Op op,Expression e1, Expression e2) implements Expression{
@@ -92,6 +98,12 @@ public class Program{
             }
             return "(" + e1.prettyprinter() +" "+ opStr +" " + e2.prettyprinter() + ")";
         }
+
+        @Override
+        public DefineLLVM toLLVM() {
+            // TODO Auto-generated method stub
+            throw new UnsupportedOperationException("Unimplemented method 'toLLVM'");
+        }
     
     }