Question

Create a java program which will prompt a user to input a product and its cost. Using a while loop that will run until the sentinel value of “stop” (any case) is entered, the program will look for items with a cost greater than or equal to $100.00. The program will find the average cost of those items.

Note: immediately after your statement containing input.nextDouble() you will need to add the following input.nextLine() statement. This will cause the input scanner to consume the newline after your product cost. Otherwise, your program will skip the next input statement. The code should look like this:

productCost = input.nextDouble();
input.nextLine(); // Consume newline

Answer 1

import java.util.Scanner;

public class AverageProductCost {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double average = 0, count = 0, productCost;
        String name;
        while (true) {
            System.out.print("Enter product name: ");
            name = input.nextLine();
            if(name.equalsIgnoreCase("stop")) {
                break;
            }
            System.out.print("Enter product cost: ");
            productCost = input.nextDouble();
            input.nextLine(); // Consume newline
            if(productCost >= 100) {
                average += productCost;
                count++;
            }
        }
        average /= count;
        System.out.println("Average cost of items is " + average);
    }

}

Enter product name: pl Enter product name: Enter product cost: Enter product name: Average cost of items is 137.5 Process finished with e xit code 0