Use a two-dimensional array to solve the following problem: A company has four salespeople (1 to 4) who sell five different products (1 to 5). Once a day, each salesperson passes in a slip for each type of product sold. Each slip contains the following

: a) The salesperson number

b) The product number

c) The total dollar value of that product sold that day

Thus, each salesperson passes in between 0 and 5 sales slips per day. Assume that the information from all the slips for last month is available. Write an program that will read all this information for last month's sales(one sales data at a time) and summarize the total sales by salesperson and by product. All totals should be stored in the two-dimensional array sales. After processing all the information for last month, print the results in tabular format, with each column representing a particular salesperson and each row representing a particular product. Cross-total each row to get the total sales of each product for last month. Cross-total each column to get the total sales by salesperson for last month. Your tabular output should include these cross-totals to the right of the totaled rows and to the bottom of the totaled column.

ADDITIONAL REQUIREMENT

*DESIGN A BASE CLASS NAMED EMPLOYEE AND DERIVE CHILD CLASS NAMED SALESPERSON THAT ADDITIONALLY STORES A MONTHS SLIP.

*APPLY POLYMORPHISM TO PRINT SALES FOR EACH SALESPERSON.

*USE RAND() TO CREATE SALES SLIP SO THAT A TESTING OF YOUR PROGRAM CAN BE DONE WITHOUT ANY USED INPUT.