Question

Java

This is background information First, code this project. Write a program that determines the change to be dispensed from a vending machine. An item in the machine can cost between 25 cents and a dollar, in 5-cent increments (25, 30, 35, ..., 90, 95, or 100) and the machine only accepts a single dollar bill to pay for the item. For example, a possible dialogue with the user might beEnter price of item(from 25 cents to a dollar, in 5-cent increments): 45You bought an item for 45 cents and gave me a dollar,so your change is 2 quarters,0 dimes, and 1 nickel.

You can write this program based on the program or with if statements. After getting it to work, include input checking. Display the change only if a valid price is entered (no less than 25 cents, no more than 100 cents, and an integer multiple of 5 cents). Otherwise, display separate error messages for any of the following invalid inputs: a cost under 25 cents, a cost that is not an integer multiple of 5, and a cost that is more than a dollar.

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Answer 1

CODE

import java.util.Scanner;

public class Main
{
        public static void main(String args[])
        {
                //variables
                int price;
                int quarters, dimes, nickel;
                
                Scanner sc = new Scanner(System.in);
                
                //prompt for price
                System.out.print("Enter price of item(from 25 cents to a dollar, in 5-cent increments): ");
                price = sc.nextInt();
                
                //if price less than 25 cents
                if(price < 25)
                {
                        System.out.println("Invalid price, Price can't be less than 25 cents.");
                }
                //if price greater than 100 cents
                else if(price > 100)
                {
                        System.out.println("Invalid price, Price can't be greater than 100 cents.");
                }
                //if price is not multiple of 5
                else if(price % 5 != 0)
                {
                        System.out.println("Invalid price, Price must be multiple of 5.");
                }
                //if a valid price
                else
                {
                        //calculating total change
                        int cents = 100 - price;
                        
                        //calculating number of quarters
                        quarters = cents / 25;
                        
                        //calculating remaining change
                        cents = cents % 25;
                        
                        //calculating number of dimes
                        dimes = cents / 10;
                        
                        //calculating remaining change
                        cents = cents % 10;
                        
                        //calculating number of nickel
                        nickel = cents / 5;
                        
                        //printing output
                        System.out.println("You bought an item for " + price + " cents and gave me a dollar,so your change is " + quarters + " quarters," + dimes + " dimes, and " + nickel + " nickel.");
                }
        }
}

OUTPUT

CODE SCREEN SHOT