Theory

Question 1

Answer 1

Question 2

Answer 2

Question 3

Answer 3

Question 4

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9

Question 10

Answer 10

Question 11

(a) The following assignment statements are invalid. Give the reason in each case. (i) xy = xy ^ c4 Reason ……………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………[1] (ii) zy = zy \ 10 Reason ……………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………[1] (iii) yy := xz ^ − 6 Reason ……………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………[1] (b) Complete the Backus-Naur Form (BNF) for the syntax diagrams on the opposite page. ::= ………………………………………………………………………………………………………………………………… ::= ………………………………………………………………………………………………………………………………… ::= ………………………………………………………………………………………………………………………………… ::= ………………………………………………………………………………………………………………………………… [4] (c) Rewrite the BNF rule for a variable so that it can be any number of letters. ::= ……………………………………………………………………………………………………………………………..[2]

Answer 11

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15