1. Write the syntax definitions of the following objects: (a) Natural number (1, 2, 3, )

(b) Unsigned integer (0, 1, 2, 3, )

(c) Integer (, -2, -1, 0, 1, 2, )

(d) Odd number (, -3, -1, 1, 3, ) (e) Even number (, -4, -2, 0, 2, 4, ) (f) Integer divisible by 5 (, -10, -5, 0, 5, 10, )

Solve each problem from (a) to (f)using EBNF, syntax diagrams, and the parenthetic notation.