show leftmost derivation for this program:
begin
x y
x = 1 ;
y = 2 ;
end
show leftmost derivation for this program: begin x y x = 1 ; y = 2...
Using the grammar below: <program> → begin <stmt_list> end <stmt_list> <stmt> | <stmt>; <stmt_list> <stmt> <var> = <expression> <var> → ABC <expression> <var> + <var> | <var> - <var> | <var> 1) show a leftmost derivation and draw a parse tree for each of the statements below: (1) begin A=A-B; B=C; C=A end (2) begin A=B+C; C=C+B end 2) try a rightmost derivation and draw a parse tree for each of the statements in Q1).
) Using the following grammar, show a parse tree and a leftmost derivation for the following sentence (make sure you do not omit parentheses in your derivation): Grammar <assign> → <id> = <expr> <id> → A | B | C <expr> → <expr> + <term> | <term> <term> → <term> * <factor> | <factor> <factor> → (<expr>) | <id> Derive C = (A+B)*(C+A)*(C+B)
3. Using the grammar below, show a parse tree and a leftmost derivation for the statement. A = ( A + (B)) * C assign <idxpr expr>? <expr> <term> term <term factor factor (<expr>) l <term I <factor l <id> 4. Prove that the following grammar is ambiguous (Give sentence that has two parse trees, and show the parse trees):
Use the grammar given below and show a parse tree and a leftmost
derivation for each of
the following statements.
1. A = A * (B + (C * A))
2. B = C * (A * C + B)
3. A = A * (B + (C))
<assign> → <id> <expr> = <expr> → <id> + <expr> kid<expr> <expr>) ids
6. (8 pts) Using grammar below show a Parse tree and leftmost derivation for a). A = A * (B+C) <assign> à<id> = <expr> <id> à A | B|C <expr>à <expr> + <term> | <term> <term> à <term> * <factor> |<factor> <factor> à ( <expr> ) |<id>
Problem 1. Consider the grammar S → Y X Y X → a Y | Y Y → b b Y | X | ε where a and b are tokens. Remember that ε represents the empty string. Y → ε means that Y does not have to match any tokens. 1. Give a leftmost derivation for the string (sequence of tokens): bbabbabb 2. Give a rightmost derivation for the string (sequence of tokens): bbabbabb
- Using the grammar in Example 3.2, show a parse tree and a leftmost derivation for the following statement: B = C * (A * (B + C)). EXAMPLE 3.2 A Grammar for Simple Assignment Statements <assign> → <id> = <expr> <id> → A | B | C <expr> → <id> + <expr> | <id> * <expr> | ( <expr> ) | <id>
PWA = PWB = 1 2. Project C costs X to begin and costs Y every year to operate with a salvage value of Z at the end of Year 5. Project D costs P to begin and costs Q every year to operate with a salvage value of S at the end. D will last forever. Use an annual rate of R to conduct an Annual Worth Analysis to determine the AW of both Cand. D. X = -400...
Show that the following grammar is ambiguous. Hint: Show two different leftmost or rightmost derivations for the same string. Equivalently, you can show two different parse trees for the same string. <expr> ::= <expr> + <expr> | <expr> - <expr> | <expr> * <expr> | <expr> / <expr> | int int ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 Using this grammar show that ambiguity is not acceptable...
Question 3: Given the following grammar: assign → id := expr expr → expr + term \ term term -term *factor lfactor factor-(expr) id Using the above grammar, show a leftmost derivation (first five steps) for the following assignment statement: A ((A B)+ C) a. [3 marks] b. Using the above grammar, show a rightmost derivation (first five steps) for the following assignment statement: A:-A+B+C)+A [3 marks] Draw the abstract syntax tree for each of the above statements [4 marks]...