diff --git a/src/ast_to_c.ml b/src/ast_to_c.ml
index 71be88e..e812ff5 100644
--- a/src/ast_to_c.ml
+++ b/src/ast_to_c.ml
@@ -254,20 +254,20 @@ let cp_init_aux_nodes fmt (node, h) =
 
 
 (** [cp_equations] prints the node equations. *)
-let rec cp_equations fmt (eqs, hloc) =
+let rec cp_equations fmt (eqs, hloc, h) =
   match eqs with
   | [] -> ()
   | eq :: eqs ->
     Format.fprintf fmt "%a%a"
-      cp_expression (equation_to_expression (hloc.nt_map, eq), hloc.nt_map)
-      cp_equations (eqs, hloc)
+      cp_expression (equation_to_expression (hloc, h, eq), hloc.nt_map)
+      cp_equations (eqs, hloc, h)
 
 (** [cp_node] prints a single node *)
 let cp_node fmt (node, h) =
   Format.fprintf fmt "%a\n{\n%a%a\n\n\tstate->is_init = false;\n%a}\n"
     cp_prototype (node, h)
     cp_init_aux_nodes (node, h)
-    cp_equations (node.in_equations, Hashtbl.find h node.in_name)
+    cp_equations (node.in_equations, Hashtbl.find h node.in_name, h)
     cp_prevars (node, h)
 
 (** [cp_nodes] recursively prints all the nodes of a program. *)
diff --git a/src/cast.ml b/src/cast.ml
index f000b2a..81b0672 100644
--- a/src/cast.ml
+++ b/src/cast.ml
@@ -13,7 +13,7 @@ and c_expression =
   | CAssign of c_var * c_value
   | CSeq of c_expression * c_expression
   | CIf of c_value * c_block * c_block
-  | CApplication of ident * c_var list
+  | CApplication of ident * int * c_var list * c_var list * node_states
 
 (** A value here is anything that can be inlined into a single C expression
   * containing no function call, condition, ... *)
diff --git a/src/cprint.ml b/src/cprint.ml
index 572ab06..714ae48 100644
--- a/src/cprint.ml
+++ b/src/cprint.ml
@@ -166,11 +166,26 @@ let rec cp_expression fmt (expr, hloc) =
       Format.fprintf fmt "%a%a"
         cp_expression (e, hloc)
         cp_expression (e', hloc)
-  | CApplication (fn, l) ->
-      (Format.fprintf fmt "%s(%a);"
-        fn
-        cp_varlist' l;
-        failwith "TODO: use nt_output_map to fetch the output!")
+  | CApplication (fn, nb, argl, destl, h) ->
+    begin
+      let aux_node_st = Hashtbl.find h fn in
+      let h_out = aux_node_st.nt_output_map in
+      Format.fprintf fmt "%sfn_%s(%a);\n"
+        prefix fn
+        cp_varlist' argl;
+      let _ = List.fold_left
+        (fun i var ->
+          match var with
+          | CVStored (arr, idx) ->
+            let (arr', idx') = Hashtbl.find h_out i in
+            Format.fprintf fmt "%sstate->%s[%d] = ((%s*)(state->aux_states[%d]))->%s[%d];\n"
+              prefix arr idx
+              aux_node_st.nt_name (nb-1)
+              arr' idx';
+            i+1
+          | CVInput _ -> failwith "[cprint.ml] Impossible!")
+        0 destl in ()
+    end
   | CIf (v, b1, b2) ->
       Format.fprintf fmt "if (%a) {\n%a\t\t} else {\n%a\t\t}\n"
         cp_value (v, hloc)
diff --git a/src/ctranslation.ml b/src/ctranslation.ml
index 78979a4..0e593f3 100644
--- a/src/ctranslation.ml
+++ b/src/ctranslation.ml
@@ -17,7 +17,8 @@ let rec iexpression_to_cvalue e =
   | IEApp   _
   | IETriOp _ -> failwith "[ctranslation.ml] Should not happened."
 
-let equation_to_expression ((hloc: (ident * bool, string * int)Hashtbl.t), ((vl, expr): i_equation)) : c_expression =
+let equation_to_expression (node_st, node_sts, (vl, expr)) =
+  let hloc = node_st.nt_map in
   let fetch_unique_var () =
     match vl with
     | [v] ->
@@ -44,12 +45,32 @@ let equation_to_expression ((hloc: (ident * bool, string * int)Hashtbl.t), ((vl,
   | IEComp  (op, e, e') ->
       CAssign (fetch_unique_var (),
                 CComp (op, iexpression_to_cvalue e, iexpression_to_cvalue e'))
+      (** [CApp] below represents the i-th call to an aux node *)
+  | IEApp   (i, node, e) ->
+      (** e is a tuple of variables due to the linearization pass *)
+      let al: c_var list =
+        match e with
+        | IETuple l ->
+            List.map
+              (function
+                | IEVar v -> v
+                | _ -> failwith "[ctranslation.ml] should not happened due to the linearization pass."
+                ) l
+        | _ -> failwith "[ctranslation.ml] should not happened due to the linearization pass."
+        in
+      let vl =
+        List.map
+          (fun v ->
+            match Hashtbl.find_opt hloc (Utils.name_of_var v, false) with
+            | Some (arr, idx) -> CVStored (arr, idx)
+            | None -> CVInput (Utils.name_of_var v))
+          vl
+        in
+      CApplication (node.n_name,i , al, vl, node_sts)
   (*TODO!
   | IETriOp of triop * i_expression * i_expression * i_expression
   | IEWhen  of i_expression * i_expression
   | IEReset of i_expression * i_expression
-  | IETuple of (i_expression list)
-      (** [CApp] below represents the n-th call to an aux node *)
-  | IEApp   of int * t_node * i_expression*)
+  | IETuple of (i_expression list)*)
   | _ -> failwith "[ctranslation.ml] TODO!"
 
diff --git a/src/test2.node b/src/test2.node
new file mode 100644
index 0000000..5dcbf29
--- /dev/null
+++ b/src/test2.node
@@ -0,0 +1,10 @@
+node aux (i: int) returns (a, b: int);
+let
+  a = 1 -> pre i;
+  b = 2 * i -> (3 * pre i);
+tel
+
+node n (i: int) returns (o1, o2: int);
+let
+  (o1, o2) = aux (i);
+tel