Backus-Naur forms are used to describe the syntax of programming languages such as Algol60.
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Q3: Derivation is the process that replaces left-hand
Q4: Abstract syntax trees abstract the essential structure
Q5: Productions are in Backus-Naur form if they
Q6: Reserved words,or keywords,are not considered to be
Q7: In extended Backus-Naur form,square brackets [ ]
Q9: Regular expressions can be used to describe
Q10: The description of simple integer arithmetic expressions
Q11: The curly bracket { } notation used
Q12: The lexical structure of a programming language
Q13: The start symbol is used to identify
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