Homework - Data structures in java

Suppose a real number is represented by java class, such as public class Real { private long left, right where left and right represent the digits to the left and right of the decimal point, respectively. If left is a negative integer, then the represented real number is negative.
a. write a routine to input a real number, and create an object representing that number.
b. write a function that accepts such a structure and returns the real number represented by it.
c. write routines add, subtract and multiply that accept two such structures and set the valure of the third structure to represent the number that is the sum, difference, and product, respectively, of the two input records.

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