Hi,
I would like to know how to write BNF for code blocks that have
optional block enclosing symbols like {}
For example, the following statements are both valid:
if () $printf();
if()
{
func1;
func2;
}
How to I specify that {} are optional when number of statement is just one.
Also, when I write a BNF for a new lanugage, the words that are
reserved are categorized as keywords.
What about symbols like {} etc. What are they categorized as?
Regards
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