I am trying to write the syntax grammar of the below diagram but I didn't succeed. I tried
Choice ::= letter ( ( 'digit' | '_' ) letter )
but it is totally wrong. How can I write the Syntax of this?
I am trying to write the syntax grammar of the below diagram but I didn't succeed. I tried
Choice ::= letter ( ( 'digit' | '_' ) letter )
but it is totally wrong. How can I write the Syntax of this?
The right syntax in EBNF like notation would be: