convert variables to C#?

var audio1 : AudioSource;
var audio2 : AudioSource;

i see javascript examples all the time im just not sure how to declare these variables in c#

i know its dumb.

The C# format is:

Type variableName;

Or with an initial value:

Type variableName = initialValue;

So, for example,

AudioSource audio1;

Note that if these are class members (not local variables in a function’s scope), they will be private by
default
(and not displayed in the Inspector) unless you prefix the declaration with public (or [SerializeField] if you want it private and Inspectable):

public int myPublicIntegerParameter;