Illustration of Passing arguments to functions:
Here is an illustration of calling this function:
>> printrand()
The random # is 0.94
As nothing is passed to the function, none of the arguments are there in the parentheses in the function call, and not any in the function header, either. However, the parentheses are not even required in either the function or the function call; also this works.
>> printrandnp
The random # is 0.52