Hi, I am new and learning with tutorials. If I us a script like this:

using UnityEngine;
using System.Collections;
public class example : MonoBehaviour {
    void OnGUI() {
       if (GUI.Button(new Rect(10, 10, 150, 100), "I am a button"))
          print("You clicked the button!");
   }
}

it wont show anything when I run the game. But if use javascript writing the exact same script it will work.

function OnGUI() {
   if (GUI.Button (Rect(10,10,150,100), "I am button"))
       print ("You clicked the button!");

}

Happens the same with any other any other OnGUI function I tried.

Whats wrong with the C# scripts?