Regular Expressions

Question 1

What is BNF

Answer 1

A way of defining a complex language such as English unambiguously, need it because regular expressions don’t handles recursive loops well

Question 2

How do we write a variable

Question 3

How do we write is defined by

Answer 3

::=

Question 4

How do we write or

Answer 4

|

Question 5

How do we write a recursive loop

Answer 5

Identifier ::= |