CSC 108 Midterm - Spring 1998 - Tuesday Section
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1. [10 marks]

Below is a Java program segment that begins with some variable
declarations and ends with a sequence of assignment statements.  Each
assignment statement attempts to give a new value to a variable.

To the right of each assignment statement, write the value assignmed to
the variable, and do not include a decimal point otherwise.  In
addition, put single quotes around characters, put double quotes around
strings, and clearly indicate whether or not a blank is included in the
string.  If the assignment statement would fail, write the word "Error"
and briefly explain what the error is to the right of the statement.

boolean b;
float f;
int i;
String s;

i = 4 + 2 * 3;

i = 5 % 2 + 1;

i = 3 * (1 / 2);

i = 5.0 / 2.0;

f = 2 * 3;

i = (int) 7.8;

s = "Good" + "Luck";

i = s.indexOf ('d');

b = 2 + 3 > 10;

b = true || false;

2. [10 marks: 8 marks for part (a), 2 marks for part (b)]

(a) The Widget Company needs a program to keep track of its parts.
Write a Java class called Part with the instance variables name
(String), number (long) and price (double).  Include a constructor in
the class to initialize these instance variables when you instantiate
an object of this class.  Also include a print method in the class to
print the name, number, and price of the object.


(b) Write a brief Java program segment to instantiate an object called
new_part of the Part class and initialize its instance variables name
to "Widget Wheel," number  to 94523 and price to 9.99.  Then call the
print method associated with the object to print the information
associated with the object.

3. [10 marks]

A palindrome is a word that reads the same backwards and forwards.  The
words "a", "dad", "mom",  "noon", and "madam" are all palindromes; the
words "yes" and "no" are not.

Write a Java boolean method called is_palindrome that accepts one
String argument word and returns true if word is a palindrome and false
otherwise.

To make the problem simpler, you may assume (without checking) that the
String word consists of small letters only.