Can't run simulink model

I have simple celcius to fahreneit model in simulink

Here it is

When I click run I just hear a error sound and nothing happens I don't even see a error message can anyone help me about it?

Answer 1

[Walter Roberson]

Normal Simulink execution beeps when the model finishes. That is the notification: it does not pop up a notice saying "Finished!" or anything like that.

You need to open the scope block (rightmost in the diagram) to see the plotted signal .