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Friday, 19 August 2016

Chapter 5 Exercise 42, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

*5.42 (Financial application: find the sales amount) Rewrite Programming Exercise 5.39 as follows:
 ■ Use a for loop instead of a do-while loop.
 ■ Let the user enter COMMISSION_SOUGHT instead of fixing it as a constant.

import java.util.Scanner;
 
public class ProgrammingEx5_42 {
 
 public static void main(String[] args) {
 
  Scanner input = new Scanner(System.in);
  System.out.print("Enter commission amount:");
  double commissionSought = input.nextDouble();
  double sale = 0, commission = 0;
 
  while (commission < commissionSought) {
 
   if (sale <= 5000) {
    commission = sale * 0.08;
 
   } else if (sale <= 10000) {
    commission = 5000 * .08 + (sale - 5000) * 0.1;
 
   } else {
 
    commission = 5000 * .08 + 5000 * 0.1
      + (sale - 10000) * .12;
   }
    
   sale+=0.01; //increase sale by a penny on each loop
  }
  System.out.printf("The sale you need to generate is %.2f", (sale-0.01));
 
 }
}

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