COMPILER DESIGN

LEXICAL ANALYSIS

REGULAR EXPRESSIONS AND FINITE AUTOMATA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statement is true for Dead State?
A
It cannot be reached anytime
B
There is no necessity of the state
C
If control enters no way to come out from the state
D
If control enters FA deads
Explanation: 

Detailed explanation-1: -Which of the following statement is true for Dead State? Explanation: It is a rejecting state for if the control enters it reaches the dead end and cannot reach an accepting state.

Detailed explanation-2: -Unreachable states are the states that are not reachable from the initial state of the DFA, for any input string. These states can be removed. Dead states are the states from which no final state is reachable. These states can be removed unless the automaton is required to be complete.

Detailed explanation-3: -Explanation: Proper and sequential combination of events leads the machines to work in hand which includes The elevator, Combinational Locks, Traffic Lights, vending machine, etc. Other applications of Finite machine state system are Communication Protocol Design, Artificial Intelligence Research, A Turnstile, etc.

Detailed explanation-4: -A finite-state machine with only one state is called a “combinatorial FSM". It only allows actions upon transition into a state.

There is 1 question to complete.