Write a C program, called msg.c, that reads messages from an input file (or stdin) and verifies whether the messages are valid or not. We developed a protocol for reading messages from a device. There...

• Write a C program, called msg.c, that reads messages from an input file (or stdin) and verifies whether the messages are valid or not.

• We developed a protocol for reading messages from a device. There are different length messages. Each message has rules, described below. Messages are separated by a newline..


• Each message is followed by a description, some examples, and a
  Deterministic Finite State Automaton
  (DFA) which recognizes the message. Before input is read, we are in state 1. We transition states on each character read. If, at the end of input, we are in an
  accepting state
  (double circle), then the message is valid.

foo:

Starts with an E followed by a string of digits 0 1 or 2 followed by an F . E.g.:

E201022011101F

eep:

Starts with a P, followed by arbitrary number of BC (including none). E.g.:

P

PBCBCBC

op:

Starts with a Q . Followed by a string of 6 and 7 , where the number of 7 s must be odd. E.g.:

Q7

Q66666676666

Q76767

ork:

Starts
with
an M, followed by a
foo
or an
eep. E.g.:

ME2010201F

MPBC

Following is the code for 1st and 3rd case. Please complete the code for 2nd and 4th.