Can someone please...
...give me an example of an alphanumeric character?
I thought that would be a letter or number. i.e. a, d, 6, 2...
I think I might be wrong though.
Yes: 1! It is 0-9 and a-z
-- You lived inside my world so softly
-- Protected only by the kindness of your nature
nope, you are right tech. Alphanumeric charachters are characters a-z and 1-9
alphanumeric character -> [letter | digit]*
letter -> a-z
digit -> 0-9
heh here's the BNF grammar for alphanumeric characters