Question

Create a modular program using structured programming to store the amount of money a local store made in sales for each day of the past week. The user will be given the option to enter an amount for the next day, compute the average, find the highest amount, find the lowest amount, or print all the information including the daily sales with the average, highest, and lowest amount. When the user chooses an option to enter an amount for the next day, the user will be prompted to enter the amount. The amount must be greater than or equal to 0. If a negative amount is entered the user will be given an error message and prompted to enter a value greater than or equal to 0 for the same day. Once the user has entered a value greater than or equal to 0, that amount will be saved. If the user attempts to enter more than seven days the program will give the user an error message informing them the information for the entire week has already been entered. If the user chooses to compute the average, find the highest amount, or find the lowest amount that amount will be printed to screen. This program will only have one class which has static methods and uses a single array of size seven to save the daily sales amounts. There should be a main method, a static method to get an amount from the user, compute the average, find the lowest amount, find the highest amount, and print out all the information.

Answer 1

Note: Could you plz go this code and let me know if u need any changes in this.Thank You
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WeeklySales.java

import java.util.Scanner;

public class WeeklySales {

public static void main(String[] args) {

// Declaring and initializing an array

double sales[] = new double[7];

int i = 0;

double value = 0;

/*

* Creating an Scanner class object which is used to get the inputs

* entered by the user

*/

Scanner sc = new Scanner(System.in);

System.out.print("Enter the sales amount :$");

while (true) {

while (true) {

if(i<sales.length)

{

value = sc.nextDouble();

}

if (value < 0) {

System.out.println("** Invalid.Must be greater than zero **");

System.out.print("Enter the sales amount :$");

} else {

if(i<sales.length)

{

sales[i] = value;

i++;

}

break;

}

}

System.out.print("Do you want to enter next day sales amount (y/n)?");

char ch = sc.next(".").charAt(0);

if (ch == 'Y' || ch == 'y') {

if (i < sales.length) {

System.out.print("Enter the sales amount :$");

} else {

System.out.println("** information for the entire week has already been entered **");

}

continue;

} else {

break;

}

}

//Displaying the output

System.out.printf("Average of weekly sales :$%.2f\n",computeAverage(sales));

System.out.printf("Highest Sales amount :$%.2f\n",findHighest(sales));

System.out.printf("Lowest Sales amount :$%.2f\n",findLowest(sales));

}

//This method will find the lowest element in the array

private static double findLowest(double[] sales) {

double min=sales[0];

for(int i=0;i<sales.length;i++)

{

if(min>sales[i])

min=sales[i];

}

return min;

}

//This method will find the highest element in the array

private static double findHighest(double[] sales) {

double max=sales[0];

for(int i=0;i<sales.length;i++)

{

if(max<sales[i])

max=sales[i];

}

return max;

}

//This method will calculate the average of all elements

private static double computeAverage(double[] sales) {

double sum=0;

double min=sales[0];

for(int i=0;i<sales.length;i++)

{

sum+=sales[i];

}

return (sum/sales.length);

}

}

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Output:

Enter the sales amount :$3400
Do you want to enter next day sales amount (y/n)?y
Enter the sales amount :$5400
Do you want to enter next day sales amount (y/n)?y
Enter the sales amount :$-7800
** Invalid.Must be greater than zero **
Enter the sales amount :$7800
Do you want to enter next day sales amount (y/n)?y
Enter the sales amount :$6100
Do you want to enter next day sales amount (y/n)?y
Enter the sales amount :$8800
Do you want to enter next day sales amount (y/n)?y
Enter the sales amount :$6600
Do you want to enter next day sales amount (y/n)?y
Enter the sales amount :$4300
Do you want to enter next day sales amount (y/n)?y
** information for the entire week has already been entered **
Do you want to enter next day sales amount (y/n)?y
** information for the entire week has already been entered **
Do you want to enter next day sales amount (y/n)?n
Average of weekly sales :$6057.14
Highest Sales amount :$8800.00
Lowest Sales amount :$3400.00

________Could you plz rate me well.Thank You