diff --git a/projects/comment.j b/projects/comment.j
new file mode 100644
index 0000000..a36150d
--- /dev/null
+++ b/projects/comment.j
@@ -0,0 +1,5 @@
+// Esto es un comentario
+println("Hello World!")
+
+// Otro comentario mas
+println(40)
\ No newline at end of file
diff --git a/projects/functions.j b/projects/functions.j
index 4013919..f6461f4 100644
--- a/projects/functions.j
+++ b/projects/functions.j
@@ -1,2 +1,3 @@
 x = "Hello"
-println(len(x) + 3)
\ No newline at end of file
+y = 2 * (4 - 2)
+println(y)
\ No newline at end of file
diff --git a/src/frontend/parser.h b/src/frontend/parser.h
index 0df9701..7e5a938 100644
--- a/src/frontend/parser.h
+++ b/src/frontend/parser.h
@@ -12,11 +12,10 @@ typedef enum {
   NODE_VAR,        // referencia a variable
   NODE_ASSIGN,     // asignacion: x = expr
   NODE_BINOP,      // operacion binaria: a + b
-  NODE_PRINT,      // print(expr)
-  NODE_PRINTLN,
-  NODE_IF,    // if cond: bloque
-  NODE_WHILE, // while cond: bloque
-  NODE_BLOCK, // secuencia de statements
+  NODE_NOP,        // noop
+  NODE_IF,         // if cond: bloque
+  NODE_WHILE,      // while cond: bloque
+  NODE_BLOCK,      // secuencia de statements
   NODE_CALL,
 } NodeType;
 
@@ -79,7 +78,7 @@ ASTNode *parse_term(Token *tokens) {
     pos++;
     return node;
   } else if (tokens[pos].type == TOK_ID) {
-    if (tokens[pos +1].type == TOK_LPAREN) {
+    if (tokens[pos + 1].type == TOK_LPAREN) {
       // Function call
       char *name = tokens[pos].value;
       pos++; // consumir ID
@@ -103,13 +102,17 @@ ASTNode *parse_term(Token *tokens) {
       node->data.call.args = args;
       node->data.call.arg_count = arg_count;
       return node;
-
     }
     ASTNode *node = make_node(NODE_VAR);
     node->data.string_val = tokens[pos].value;
     pos++;
     return node;
 
+  } else if (tokens[pos].type == TOK_LPAREN) {
+    pos++; // consumir (
+    ASTNode *expr = parse_expr(tokens);
+    pos++; // consumir )
+    return expr;
   } else if (tokens[pos].type == TOK_MINUS) {
     pos++; // consumir '-'
     ASTNode *term = parse_term(tokens);
@@ -184,6 +187,22 @@ ASTNode *parse_statement(Token *tokens) {
     return node;
   }
 
+  // Parse comments
+  if (tokens[pos].type == TOK_SLASH) {
+    if (tokens[pos + 1].type == TOK_SLASH) {
+      pos++; // consumir /
+      pos++; // consumir /
+
+      // Consumir hasta NewLine
+      while (tokens[pos].type != TOK_NEWLINE)
+        pos++;
+
+      pos++; // consumir newline
+
+      return make_node(NODE_NOP);
+    }
+  }
+
   if (tokens[pos].type == TOK_WHILE) {
     pos++; // consumir while
     ASTNode *cond = parse_expr(tokens);
diff --git a/src/vm/eval.h b/src/vm/eval.h
index 5d8f113..0c0fb50 100644
--- a/src/vm/eval.h
+++ b/src/vm/eval.h
@@ -105,17 +105,6 @@ size_t eval(ASTNode *node, Environment *env, void *allocator, int debug,
       return obj_new_int(allocator, l->data.int_val > r->data.int_val);
     }
   }
-  case NODE_PRINT: {
-    size_t val = eval(node->data.print.expr, env, allocator, debug, gc);
-    obj_print(allocator, val, "");
-    return val;
-  }
-  case NODE_PRINTLN: {
-    size_t val = eval(node->data.print.expr, env, allocator, debug, gc);
-    obj_print(allocator, val, "");
-    printf("\n");
-    return val;
-  }
   case NODE_BLOCK:
     // Run GC
     if (gc) {