Question #$3[20$ points$]$:

Given the following BNF grammar for an expression,

$$ Expr $>$ Term $>+$ Term $>$

$$ Expr $>$ Term $>$

$$ Term $>$ Factor $>**$ Factor $>$

$$ Term $>$ Factor $>$

$$ Factor $>0|1|2|dots|9$

And the following Attribute Grammar that computes the value of any given expression