$2.(15$pt$)$ Consider a language containing integers, floats and ranges $($digit is any decimal digit $0.\mathrm{.}9)$;

there are four token types:

$-$ integer : digit digit$$

$-$ float: digit$$

$($digit $.+.$ digit$)$digit$$

$-$ int$-$range: integer..integer

$-$ float$-$range: float..float

Construct:

$($a$)(10$pt$)$ a DFA and

$($b$)(5$pt$)$ a scanner table$(15$pt$)$ Consider a language containing integers, floats and ranges $($digit is any decimal digit $0.\mathrm{.}9)$;

there are four token types:

integer: digit digit ${?}^{*}$

float: digit digit.$+.$ digit$)$ digit ${?}^{*}$

int$-$range: integer $..$ integer

float$-$range: float. $.$ float

Construct:

$($a$)(10$pt$)$ a DFA and

$($b$)(5$pt$)$ a scanner table