Java入门第二季 6-2 答答租车系统

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public class Car {

public String Name = "";

public int Rent = 0;

public int FreightVolume = 0;//载物

public int CarryinCapacity = 0;//载人

}

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public class PassengerCar extends Car{  

public PassengerCar(String name,int rent,int ca) {

Name = name;

Rent = rent;

CarryinCapacity = ca;

}

}

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public class Truck extends Car{

public Truck(String name,int rent,int fr) {

Name = name;

Rent = rent;

FreightVolume = fr;

}

}

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public class PickUp extends Car {

public PickUp(String name,int rent,int ca,int fr) {

Name = name;

Rent = rent;

CarryinCapacity = ca;

FreightVolume = fr;

}

}

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import java.util.Scanner;

public class Initail {

public static void main(String[] args) {

Car[] cars = {new PassengerCar("奥迪A4",500,4),

new PassengerCar("马自达6",400,4),

new PickUp("皮卡雪6",450,4,2),

new PassengerCar("金龙",800,20),

new Truck("松花江",400,4),

new Truck("伊维科",1000,20)};

System.out.println("欢迎使用答答租车系统！");

System.out.println("您是否要租车：1是 0否");

Scanner scan = new Scanner(System.in);

String input = scan.next();

if(input.equals("1")) {

System.out.println("您可以租车的类型及价目表：");

System.out.println("序号\t汽车\t租金\t容量");

int a = 1;//汽车的序号

for(Car car : cars) {

if(car instanceof PassengerCar) {

System.out.println("" + a + "\t" + car.Name + "\t" + car.Rent + "元/天" + "\t" + "载人:" + car.CarryinCapacity + "人");

}

if(car instanceof Truck) {

System.out.println("" + a + "\t" + car.Name + "\t" + car.Rent + "元/天" + "\t" + "载货:" + car.FreightVolume + "吨");

}

if(car instanceof PickUp) {

System.out.println("" + a + "\t" + car.Name + "\t" + car.Rent + "元/天" + "\t" + "载人:" + car.CarryinCapacity + "人" + " " + "载货:" + car.FreightVolume + "吨");

}

a++;

}

System.out.println("请输入您要租汽车的数量：");

int num = scan.nextInt();

int[] count = new int[10];

for(int i = 0;i < num;i++) {

int b = i + 1;

System.out.println("请输入第" + b + "辆车的序号");

count[i] = scan.nextInt() - 1;//序号是从1开始，而数组是从0开始

}

System.out.println("请输入租车天数：");

int day = scan.nextInt();

System.out.println("您的账单：");

System.out.println("***可载人的车有：");

int allcc = 0;//共载人

int allfv = 0;//共载货

int price = 0;//总价格

for(int i = 0;i < num;i++) {

if(cars[count[i]] instanceof PassengerCar || cars[count[i]] instanceof PickUp) {

//count[i]保存的是车的序号，cars[count[i]]就是第i+1辆车

System.out.print("\t" + cars[count[i]].Name);

allcc = cars[count[i]].CarryinCapacity + allcc;

price = cars[count[i]].Rent + price;

}

}

System.out.println("\t" + "共载人:" + allcc + "人");

System.out.println("***载货的车有：");

for(int i = 0;i < num;i++) {

if(cars[count[i]] instanceof Truck || cars[count[i]] instanceof PickUp) {

System.out.print("\t" + cars[count[i]].Name);

allfv = cars[count[i]].FreightVolume + allfv;

if(cars[count[i]] instanceof Truck) {//如果是皮卡，则价格已经在前面统计了

price = cars[count[i]].Rent + price;

}

}

}

System.out.println("\t" + "共载货:" + allfv + "吨");

price = price * day;

System.out.println("***租车总价格为：" + price + "元");

}

else {

System.exit(0);

}

scan.close();

}

}