anchor.diff:                    labelStyle: TextStyle(color: Colors.green)), // InputDecoration
                 textAlign: TextAlign.center,
                 style: TextStyle(color: Colors.green, fontSize: 25.0),
  +              controller: heightController,
               ), // TextField
               Padding(
                 padding: EdgeInsets.only(top: 10.0, bottom: 10.0),
                 child: Container(
                   height: 50.0,
                   child: RaisedButton(
  -                  onPressed: (){},
  +                  onPressed: calculate,
                     child: Text("Calcular", style: TextStyle(color: Colors.white, fontSize: 25.0),),
                     color: Colors.green,
                   ), //RaisedButton,
                 ),//Container,
               ),
  -            Text("Info",
  +            Text( _infoText ,
                 textAlign: TextAlign.center,
                 style: TextStyle(color: Colors.green, fontSize: 25.0),
               ) // Text
  
positive.code:         actions: <Widget>[
            IconButton(
              icon: Icon(Icons.refresh),
              onPressed: () {},
            )
          ],
        ), //AppBar
  
negative.code:                   labelStyle: TextStyle(color: Colors.green)), // InputDecoration
                textAlign: TextAlign.center,
                style: TextStyle(color: Colors.green, fontSize: 25.0),
                controller: weightController,
              ), // TextField
              TextField(
                keyboardType: TextInputType.number,
  