Unity 3D keeps on crashing upon code run.

I am new to Unity 3D. I'm currently learning C# from a book. Loads of fun. However, I ran into a problem today.

(I have looked for the answer to this, but I cant seem to find a clear solution. I am sorry if my question will be noobish in nature and/or if the question is simple, has been answered already.)

I am experimenting with rotating a 3D cube. I created a 3D cube on the Scene panel, then I created a C# script on the Assets panel and assigned the script to the 3D cube. I am trying to run code on the 3D cube in Unity 3D to make it rotate. If I use the following, it works fine. It rotates once;

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
// Use this for initialization
void Start () {
cubeRotate ();
}

// Update is called once per frame
void Update () {
}

void cubeRotate() {
bool SomeBool = (1 == 1);
if (SomeBool) {
transform.Rotate (new Vector3 (45f, 0f, 0f));
}
}
}

However, after changing the code again in MonoDevelop to rotate the 3D cube some more and then hitting the play button on Unity 3D, the whole program crashes. It won't respond, and I have to use the "Task Manager" to quit. This is the code that crashes Unity 3D;

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
// Use this for initialization
void Start () {
cubeRotate ();
}

// Update is called once per frame
void Update () {

}
void cubeRotate() {
bool SomeBool = (1 == 1);
float i = 10;
while (SomeBool) {
transform.Rotate (new Vector3 (i, 0f, 0f));
i = i + i;
}
}
}

I am aware that my code might be wrong. The problem is, why should that crash Unity 3d?
By the way, clicking on tabs or buttons in Unity 3D is not like in other programs for me, it must be clicked hard, and sometimes many times. I don't know if this may be a clue, just thought I'd mention.

My pc: Asus intel core i5, nvidia 840m, 4gb ram
No other programs are running while I'm using Unity 3D.

 

I get it now, thanks!