A student wrote two context-free grammars G1 and G2 for generating a single C-like array declaration. The dimension of the array is at least one. For example, int a[10][3]; The grammars use D as the start symbol, and use six terminal symbols int ; id [ ] num. Grammar G1 D → int L; L → id [E E → num] E → num] [E Grammar G2 D → int L; L → id E E → E[num] E → [num] Which of the grammars correctly generate the declaration mentioned above?

A student wrote two context-free grammars G1 and G2 for generating a s

1.	A student wrote two context-free grammars G1 and G2 for generating a single C-like array declaration. The dimension of the array is at least one. For example, int a[10][3]; The grammars use D as the start symbol, and use six terminal symbols int ; id [ ] num. Grammar G1 D → int L; L → id [E E → num] E → num] [E Grammar G2 D → int L; L → id E E → E[num] E → [num] Which of the grammars correctly generate the declaration mentioned above?
A.	Both G1 and G2
B.	Only G1
C.	Only G2
D.	Neither G1 nor G2
Answer» B. Only G1

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