Question

1. Given a sample sentence and an explanation of its language, produce a BNF grammar for the language.
2. Convert a BNF grammar into an EBNF grammar.

Answer 1

The example of a language sentence and bnf is given as follows:

Example:

Sample sentence:

K1N 6N5
  M5W 2E4
  X0A 1A1

BNF for the sample:

 <postalcode> ::= <letter> <number> <letter> <number> <letter> <number>

To convert from BNF to EBNF:

Extended Backus-Naur form (EBNF) is a collection of extensions to Backus-Naur form.

Changing from BNF to EBNF require different rules for different types but the for the above simple example the EBNF remains the same.

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