Tuesday, June 5, 2007

Question 7


<parameter specification> ::= <parameter> | (<parameter specification>,<parameter>)
<parameter> ::= <alphabetic character>|<parameter><alphabetic character>
<parameter> ::= a|b|c|…|x|y|z

a. ((abc, def))
b. ((abc, def), ghi)
c. (abc)
d. (abc, (def))

answer


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