哎。这是我写的 好吧我承认有抄的 有几个子类还没复制
package dadazuche;
import java.util.Scanner;
public class Initail {
public static void main(String[] args) {
Scanner input= new Scanner(System.in);
int rentsum = 0;
int i =0;
StringBuffer permessage = new StringBuffer();
StringBuffer goodsmessage = new StringBuffer();
int zairenshu=0;
int zaihuoshu=0;
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");
int choose = input.nextInt();
Car cars[]={new Passenger("奥迪A4",500,4),new Passenger("马自达6",400,4),new Pika("皮卡雪6",450,4,2),new Passenger("金龙",800,20),new Goods("松花江",400,4),new Goods("依维柯",1000,20)};
if(choose==0){
System.out.println("欢迎再次光临!");
}
if (choose == 1){
System.out.println("您可租车的类型及其价目表:");
}
for(i=0 ;i<cars.length;i++){
System.out.print((i+1)+".\t");
if(cars[i] instanceof Passenger){
System.out.println(cars[i].name+"\t"+cars[i].rent+"元/天"+"\t"+"\t"+"载人:"+"\t"+cars[i].person+"人");}
if(cars[i] instanceof Goods){
System.out.println(cars[i].name+"\t"+cars[i].rent+"元/天 "+"\t"+"载货:"+"\t"+cars[i].goods+"吨");}
if(cars[i] instanceof Pika){
System.out.println(cars[i].name+"\t"+cars[i].rent+"元/天"+"\t"+"\t"+"载人:"+"\t"+cars[i].person+"人"+"\t载货:"+cars[i].goods+"吨");
}
}
System.out.println("请输入您要租车的数量:");
int numberday=input.nextInt();
for (i=0;i<numberday;i++){
System.out.println("请输入第"+(i+1)+"辆车的序号:");
int xuhao = input.nextInt();
xuhao=xuhao-1;
if(cars[xuhao] instanceof Passenger){
rentsum+=cars[xuhao].rent;
permessage.append(cars[xuhao].name+"\t");
zairenshu+=cars[xuhao].person;
}
if(cars[xuhao] instanceof Goods){
rentsum+=cars[xuhao].rent;
goodsmessage.append(cars[xuhao].name+"\t");
zaihuoshu+=cars[xuhao].goods;
}
if(cars[xuhao] instanceof Pika){
rentsum+=cars[xuhao].rent;
permessage.append(cars[xuhao].name+"\t");
zairenshu+=cars[xuhao].person;
zaihuoshu+=cars[xuhao].goods;
}
}
System.out.println("请输入租车的天数:");
int days=input.nextInt();
System.out.println("您的账单:");
System.out.println("***可载人的车有:");
System.out.println(permessage+"可载人:"+zairenshu+"人");
System.out.println("***可载货的车有:");
System.out.println(goodsmessage+"可载货:"+zaihuoshu+"吨");
System.out.println("租车的总价格:"+rentsum*days);
}
}