Q$1$: for the following grammar:

Expr $-$ Expr $|($Expr$)|$ Var ExprTail

ExprTail $-$ Expr $|$

Var $$ id VarTail

VarTail $($Expr$)|$

a$.$ Construct the $LL(1)$ predictive parse table

b$.$ show execution on input id$--$id$(($id$))$

Q$2$: Consider the following grammar is:

$STL$;

$T$ int $|$ float

$LL,id|id$

perform shift reducce parsing of the input string $"$ int id$,$id; $"$