Archive for April, 2014
Tugas Tekkom – 3
S → AF | B * AS’
F → +SS’ | -SS’
S’ → +AS’ | -AS’ | ε
B → aBB’ | a(a+B)B’ | bB’
B’→ (a+B)B’ | *aB’
B → aG | bB’
G → BB’ | (a+B)B’
B’ → (a+B)B’ | *aB’
A → a
First S → {a,b}
First F → {+,-}
First S’ → {+,-, ε}
First B → {a,b}
First G → {a,b,(}
First B’ → {(,*}
Follow S → {$,+,-}
Follow S’ → {$}
Follow B → {$,a,b,)}
Follow B’ → {$}
Follow F → {$,+,-}
Follow G → {$,a,b,)}
2.
S → if E then S | if E then sS else S | V:= E
V → id |id[E]
E → E+T |E-T|T
T → T*F|T/F|F
F → V|(E) |const
Tentukan First, Follow, dan tabel dari production diatas!
Jawaban:
S → If E then SS’ | V:=E
S’ → ԑ | else S
V → idV’
V’→ ԑ|(E)
E → TE’
E’ → +TE’|-TE’| ԑ
T → FT’
T’→ *FT’ | /FT | ԑ
F → V|(E)| const
First (S) = {if, id}
First (S’) = {ε, else}
First (E) = { id, ( , const}
First (E’) = {+, -, ε}
First (T) = {id,(, const}
First (T’) = {*, /,ε }
First (F) = {id,(, const}
First (V) = {id}
First (V’) = {a b c}
Follow (S) = {$}
Follow (S’) = {$}
Follow (E) = { then, $,),]}
Follow (E’) = { then, $,),]}
Follow (T) = {+, -}
Follow (T’) = {+, -}
Follow (F) = {*,/ }
Follow (V) = {:}
Follow (V’) = {:}
3.
S → a=A
A → aA’ |bA’
A’ → +AA’ | ԑ
Tentukan First, Follow, dan tabel dari production diatas!
Jawaban:
First (S) ={a}
First (A) = {a,b}
First (A’) = {+, ԑ}
Follow(S) ={$}
Follow(A) ={$, +}
Follow(A’) = {$, +}
4.
be → bt be’
be’ → or bt be’
be’ → ԑ
bt → bf bt’
bt’ → and bf bt’
bt’ → ԑ
bf → not bf
bf → (be)
bf → true
bf → false
Input : not(true or false) and true and true and false not (false) true
Jawaban:
First (be) = {not , ( , true , false}
First (be’) = {or , ε}
First (bt) = {not , ( , true , false}
First (bt’) = {and , ε}
First (bf) = {not , ( , true , false}
Follow (be) = {$ , )}
Follow (be’) = {$ , )}
Follow (bt) = {or , $ , )}
Follow (bt’) = {or , $ , )}
Follow (bf) = {or, $, ) , and}
