Compiler

Question

First {a} =?

First{a, b} =?

First{a, b, c} =?

First {a, $} =?

Where a, b, c are terminals.

Comments

Grammar is not required to compute first of terminals...?

Answer 1

For any terminal symbol a , First(a) = {a}.

I think answers are {a}, {a,b}, {a,b,c}, {a,$}

correct if anything wrong.

Comments

yes thats correct

https://sites.tufts.edu/comp181/2013/10/05/first-and-follow-sets/