Avoid negative integers in my count down script

How do i prevent the script from falling into the negative integers when counting down?
When i press the button (seal) the number of carts is deducted by 1. However, if I keep pressing the seal button,
The number of carts goes into the negative integers. How do I prevent this, and keep the number of carts from going into the negative integers?

Code (csharp):

1.  
2.  
3. public int carts;
4.  
5. void OnGUI()
6.  
7. {
8.  
9. GUI.Label(new Rect (30,107,100,20),"Carts");
10.  
11.  
12. if(GUI.Button(new Rect (87,210,115,30),"seal"))
13.        
14.     {
15.        carts -- ;
16.     }
17.  
18. }
19. /CODE]
20.  
21. Thanks
22. ~K

 

Code (csharp):

1. if (--carts < 0) carts = 0;

--Eric

 

Well, Eric5h5 thanks a bunch!

I had the same wording but l put curly braces around it, which made it work all kinds of wrong (but with no apparent errors).

Syntax makes and breaks .

Thanks again Eric
~K

 

You can still use curly braces (and usually should; in this case it's trivial enough that I didn't bother):

Code (csharp):

1. if (--carts < 0) {
2.     carts = 0;
3. }

--Eric