Answer from cs61c-em (JinHyung Park 17762465) for Question 1
I think "gotos" statement couldbe dorpped.
In my opinion, because "gotos" can make source codes be complex. If we need using "gotos", it can be changed another statements like if,while, and so on.

In my opinion, the reason of the C designers including all of that is that C makes us to be able to do all things.