Finite State Machines
From Progzoo
You can use a Finite State Machine to recognize some strings and reject others.
Finite State Machine for Decimals
This is a finite state machine that recognizes decimal numbers such as 123 and 0.123 and .789
It will not recognize strings such as 1.2.3 or 1a
A Finite State Machine
[Font]
[Default]
[Show]
[Resize]
[History]
[Profile]
Finite State Machine for String Literals
A String Literal is a double quote " followed by any sequence of characters (other than a double quote) followed by a double quote.
Acceptable string literals: "one two" and ""
Unacceptable strings one and "one
A Finite State Machine for String Literals
[Font]
[Default]
[Show]
[Resize]
[History]
[Profile]