Question

我必须编写一个程序应用程序，允许员工输入客户订购的汉堡包，薯条和软饮料的数量。

在我的“最终总数”之后，我应该从客户处获得另一部分“输入金额招标：”和“变更：”。我已经写出了代码，我不知道该如何写出招标金额和变更金额？

     public class FastFood {

/**
 * @param args the command line arguments
 */
public static void main(String[] args) {
final double pburgers=2.49;
final double pfries=1.89;
final double psodas=0.99;
final double ptax=0.13;

double burgers;
double fries;
double sodas;
double totaltax;
double total;
double tax;

Scanner input = new Scanner(System.in);

System.out.print("Enter the amount of burgers: ");
burgers = input.nextDouble();
System.out.print("Enter the amount of fries: ");
fries = input.nextDouble();
System.out.print("Enter the amount of soft drinks: ");
sodas = input.nextDouble();

totaltax = (burgers*pburgers)+(fries*pfries)+(sodas*psodas);
tax = totaltax*ptax;
total = totaltax + tax;

System.out.format("Total before tax is: $%-5.2f\n", totaltax);
System.out.format("Tax: $%-5.2f\n", tax);
System.out.format("Your final total is: $%-5.2f\n", total);


 }
 }

Answer 1

import java.util.Scanner;

public class FastFood {

/**
 * @param args the command line arguments
 */
public static void main(String[] args) {
final double pburgers=2.49;
final double pfries=1.89;
final double psodas=0.99;
final double ptax=0.13;

double burgers;
double fries;
double sodas;
double totaltax;
double total;
double tax;
double tender;
double change;

Scanner input = new Scanner(System.in);

System.out.print("Enter the amount of burgers: ");
burgers = input.nextDouble();
System.out.print("Enter the amount of fries: ");
fries = input.nextDouble();
System.out.print("Enter the amount of soft drinks: ");
sodas = input.nextDouble();

totaltax = (burgers*pburgers)+(fries*pfries)+(sodas*psodas);
tax = totaltax*ptax;
total = totaltax + tax;

System.out.format("Total before tax is: $%-5.2f\n", totaltax);
System.out.format("Tax: $%-5.2f\n", tax);
System.out.format("Your final total is: $%-5.2f\n", total);

System.out.print("Enter amount tendered: " );
tender = input.nextDouble();

change = tender - total;
System.out.format("Change: $%-5.2f\n", change);

 }
 }

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