Question

Write a Java program that calculates how much a person would earn after a period of time, according to the following rules:

1. The starting salary for the first day is $1.

2. The salary will double each day.

Ask the user to input the number of days worked. The output should display how much the salary was for each day worked, and show the total pay at the end of the work period. Get output similar to the sample output below. Restrictions: don't accept a number less than 1 for input (the person should work at least one day).

SAMPLE OUTPUT: How many days worked? -9 ERROR! Should be positive. REENTER: 12

Answer 1

In this Java Program

- We are accepting an integer to get working days and storing it in numberOfDaysWorked variable.

- Then for each day, salary is being double.

- We are printing the salary for every day as well as the overall salary

- If the user enters negative value or less than 1, we are printing the Error statement and again accepting the numberOfDaysWorked until the user enters the correct one.

- Finally, after printing to the connsole, program is being termianted

Program:

import java.util.Scanner;
public class Salary
{
   public static void main(String[] args)
   {
       Scanner src=new Scanner(System.in);
       int startingsalary=1;
       int incrementSalary=0;
       boolean flag=true;
       while(flag)
       {
           System.out.print("How many days worked? ");
           int numberOfDaysWorked=src.nextInt();
           if(numberOfDaysWorked>=1)
           {
               for(int i=1;i<=numberOfDaysWorked;i++)
               {

                   System.out.println("Day" +i + "\tSalary is $" + startingsalary);
                   incrementSalary += startingsalary;
                   startingsalary = startingsalary * 2;
               }
               System.out.println("The Total pay: $"+incrementSalary);
               flag=false;
           }
           else
           {
               System.out.println("ERROR! Should be positive");
               flag=true;
           }
       }
   }
}

Output:

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