Regular Expressions for Programming

Language Tokens

RE for numbers nat $=[0-9{]}^{+}$

signedNat $(-|)?$ Nat

number $=$ signedNat $("."$ nat$)?($E signedNat$)?$

RE for identifiers

letter $=[a-zA-Z]$

digit $=[0-9]$

identifier $=$ letter $($ digit $|)$

Make NFA to DFA diagram of all these