This is an implementation of the predictive parser (LL1)

The input to the program should be like: ~$ ./executable

name in our case is productions.txt

the inputFile will contain productions of the grammar of the form

S->ASb A-> a B -> b

if any variable contain multiple productions then they must be written on different lines like:

S->Sa S->a

imp: S->Sa | a (this form is not supported)

Epsilon productions are represented by:

S-># thiisis it