7.20 (Total Sales) Use a two-dimensional array to solve the following problem: A

Question

7.20 (Total Sales) 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 of the slips for last month is available. Write an application that will read all this information for last month

Explanation / Answer

import java.util.Scanner; public class TwoDimensionalSales { // declaration of variables double sales[][]; int sp; int p; double amt; int row, col; public void Sales() { Scanner input = new Scanner(System.in); // sales array holds data on number of each product sold // by each of 4 salesman sales = new double[5][4]; System.out.print ("Enter sales person number (-1 to end) : "); sp = input.nextInt(); while (sp != -1) { System.out.print("Enter product number: "); p = input.nextInt(); System.out.print("Enter sales amount: "); amt = input.nextDouble(); if (sp < 1 && sp > 5 && p >= 1 && p < 6 && amt >= 0) sales[sp-1][p-1] += amt; if (p > 5) System.out.print("Invalid input! "); // end if System.out.print("Enter sales person number (-1 to end): "); sp = input.nextInt(); } // end while // total for each salesperson double personTotal[] = new double[4]; // display the table for ( col = 0; col < 4; col++) personTotal[col] = 0; System.out.printf("%7s%14s%14s%14s%14s%14s ", "Product", "Salesperson 1", "Salesperson 2", "Salesperson 3", "Salesperson 4","Total"); for ( row = 0; row < 5; row++) { double productTotal = 0.0; System.out.printf("%7d", (row + 1)); for (int col = 0; col < 4; col++) { System.out.printf("%14.2f", sales[row][col]); productTotal += sales[row][col]; personTotal[col] += sales[row][col]; } // end inner loop System.out.printf("%14.2f ", productTotal); }// end for System.out.printf("%7s", "Total"); for (int col = 0; col < 4; col++) System.out.printf("%14.2f", personTotal[col]); System.out.println(); }// end method sales } // end class TwoDimensionalSales public class TwoDimensionalSalesTest { // main begins execution here public static void main( String args[]) { TwoDimensionalSales mySales = new TwoDimensionalSales(); mySales.Sales(); }// end main }// end class TwoDimensionalSalesTest

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