does a case (switch statement) has to be "case 1/2/3/...)?

[Apjjm]

An array is just a collection of values. So you may ask:

• How do i make an array?
  
• How do i get items from an array?
  

The first part is answered by example - from the code earlier:

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float[] oilTargets = {0.0f,5.0f,12.5f};

That line says make me a float array called "oilTargets" that initially contains 3 elements (the numbers in the brackets).

To be able to get items that were put in the array you can use the square brackets to "index" the array:

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oilTargets[0]

The above expression says pick the element at index 0 (the first element - computers typically start counting from 0). We could also choose element 1 or element 2 in a similar manner. Note that if our array has N items (length=N) then the last accessible index is N-1 (e.g. if our array has 4 items we can only access 0,1,2,3 indexes).

Arrays become useful when as we don't have to hardcode the number in the square brackets in - we can use a variable there instead:

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for(i=0; i<3; i+=1;)
  AddDebugMessage("Entry " + i + " is " + oilTargets[i],false);

The above code loops through the first 3 elements in the array and prints out the value of that element (The variable i takes the values 0,1,2). This loop and look at elements stuff is really handy for avoiding code repetition.

This was very much a superficial introduction to arrays to give some intuition into what is going on in the code i wrote.