Based on the following grammar, generate a sentence by derivation . The sentence

Question

Based on the following grammar, generate a sentence by derivation. The sentence cannot be int x, y; int sum; char a, b, c, n;

<Var_Dcls> -> <Var_Dcl> | <Var_Dcls> <Var_Dcl>
<Var_Dcl> -> <Type> <Vars> ;
<Var> => <Var>, <Var> | <Var>
<Type> -> int | char
<Var> -> x | y | sum | a | b | c | n

Explanation / Answer

-> -> ; -> , ; -> , , ; -> , , , ; -> , , , n ; -> , , c, n ; -> , b, c, n ; -> a, b, c, n ; -> char a, b, c, n ; -> char a, b, c, n ; -> ; char a, b, c, n ; -> sum ; char a, b, c, n ; -> int sum ; char a, b, c, n ; -> int sum ; char a, b, c, n ; -> ; int sum ; char a, b, c, n ; -> , ; int sum ; char a, b, c, n ; -> , y ; int sum ; char a, b, c, n ; -> x, y ; int sum ; char a, b, c, n ; -> int x, y ; int sum ; char a, b, c, n ;

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