2.12 Show how the Java subgrammar for IfThenStatement eliminates any ambiguity in the if statement. That is, sketch the parse...

2.12 Show how the Java subgrammar for IfThenStatement eliminates any ambiguity in the if statement. 
That is, sketch the parse tree using the Java BNF rules, and then argue that no other parse trees 
can be found using these rules.


2.14 Give a grammar and an example  if  statement for each of the following languages: 
	(a) Perl, 
	(b) Python, 
	(c) Ada.