Use object-oriented design to design a class to manage a share portfolio. Shareholdings are identified by the company name, the number of shares purchased, the date of the purchase, the cost per share and the current price per share. You must be able to calculate the value of current shares, the profit or loss made on the stock purchased and be able to sell the shares.

a Design the class table.

b Write an algorithm for each operation.

c Write a test or driver algorithm to test the class.