April
1999 QUESTION 2 Total Marks: 20 Marks |
Click here to access other
questions
Click to access
|
| Singapore Zoo requires a program to record
information about its animals. You are to write such a program.
|
||
| (a) | Each animal in the zoo has a name (a character
string) and a feeding time (an integer). Give an implementation of a class Animal that contains: (1) these private data
items; (2) a constructor that takes a name, and sets the animal's name to it and its
feeding time to 1200; (3) a method display that prints the name of the animal; and (4) an assessor method for the
feeding time of the animal.
|
[7] |
| (b) | The zoo itself is an array of 500 animals in addition to an integer that records the number of animals in the zoo. | |
| (i) Give the definition of a class Zoo that contains: (1) these private data items; and (2) a default constructor that initialises the number of animals to 0. | [4] | |
| (ii) Give the implementation of a method display that displays the name of every animal in the zoo. | [2] | |
| (iii) Give the implementation of a method next_feeding_time that takes a time (an integer)
and returns the next feeding time of an animal in the zoo after the given time. State any assumptions you make. |
[7] |