- What is the difference between a struct and a class (i.e. in Python, Java, etc)?
A struct is simply a way to group data variables together. A class groups data, functions, and supports
object-oriented principles like inheritance and polymorphism.  

- What is the difference in the stack when you pass in a struct vs basic 
variables (i.e. int, char, etc) vs array to a function as an argument? 
Basic variables and structs are both passed by value into functions. This means that the 
data is copied onto the stack frame of the function that is being called. On the other hand, 
arrays are pass by reference. This means that only the pointer to the first element in the array is copied 
into the function stack frame. The actual data values in the array are not copied. 

- How do you dereference a struct pointer to get out the member variables with only two characters? 
You use the arrow operator (->). For example, place->latitude is equivalent to (*place).latitude