哒哒租车系统练习。。。。

//定义父类car
public class car {
    String name;
    int momey;
    int people;
    int cargo;
    public String getname(){
    return name;
    }
    public void setname(String name){
    this.name=name;
    }
    public int getmomey(){
    return momey;
    }
    public void setmomey(int momey){
    this.momey=momey;
    }
    public int getpeople(){
    return people;
    }
    public void setpeople(int people){
    this.people=people;
    }
    public int getcargo(){
    return cargo;
    }
    public void setcargo(int cargo){
    this.cargo=cargo;
    }
    public void show(){
     }
    }

//载人类
public class passengerCar extends car {
    public passengerCar(String a , int b ,int c){
        this.setname(a);
        this.setmomey(b);
        this.setpeople(c);
    }
    public void show(){
        System.out.println(getname()+"\t"+getmomey()+"元/天"+"\t"+"载人"+getpeople());

    }   
}

//皮卡
public class Pickup extends car {
    public Pickup(String a,int b,int c,int d){
        this.setname(a);
        this.setmomey(b);
        this.setpeople(d);
        this.setcargo(c);
        }
        public void show(){
        System.out.println(getname()+"\t"+getmomey()+"元/天"+"\t"+"载人"+getpeople()+"载货"+getcargo());
        }

}

//载货类
public class Truck  extends car {
    public Truck(String a,int b,int c){
        this.setname(a);
        this.setmomey(b);
        this.setcargo(c);
        }
        public void show(){
        System.out.println(getname()+"\t"+getmomey()+"元/天"+"\t"+"载货"+getcargo());
        }

}

//主程序
import java.util.Scanner;
public class test {
    public static void main(String[]args){
        car[] cars={new passengerCar("奥迪A6" , 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("依维柯",1000,20) 
        };
        Scanner reader=new Scanner(System.in);
        System.out.println("欢迎使用哒哒租车系统：");
        System.out.println("您是否要租车： 1是 0否"); 
        int p=reader.nextInt();
        if(p ==1){
            System.out.println("您可租车的类型和租金价格表：");
            System.out.println("序号"+"\t"+"汽车名称"+"\t"+" 租金"+"\t"+"容量"); 
            for(int i=0;i<cars.length;i++){ 
                System.out.print(i+1+"\t"); 
                cars[i].show();
            }
            System.out.println("请输入您要租车的数量："); 
            int q=reader.nextInt(); 
            int[] z=new int[q];
            for(int i=0;i<q;i++){ 
                System.out.println("请输入你要租用的车辆序号：");
                int x=reader.nextInt();
                z[i]=x; 
                }
            System.out.println("您的账单："); 
            System.out.println("可载人的车有");
            int r=0; 
            for(int i=0;i<z.length;i++){ 
                if(z[i]==1 || z[i]==2 || z[i]==3 || z[i]==4){ 
                    System.out.print(cars[z[i]-1].getname()+" "); 
                    r=r+cars[z[i]-1].getpeople(); 
                    }
                }
            System.out.println("总载客量："+r); 
            System.out.println("可载货的车有："); 
            int h=0; 
            for(int i=0;i<z.length;i++){ 
                if(z[i]==3 || z[i]==5 || z[i]==6){ 
                    System.out.print(cars[z[i]-1].getname()+" "); 
                    h=h+cars[z[i]-1].getcargo();
                }
            }
            System.out.println("总载货量："+h);
            System.out.println("请输入你要租的天数："); 
            int day=reader.nextInt(); 
            int sum=0; 
            for(int i=0;i<z.length;i++){ 
                sum=sum+cars[z[i]-1].getmomey()*day;
            }
            System.out.println("租车总价格："+sum); 
        }else{
            System.out.println("谢谢您的光临，欢迎下次再来！");
        }
    }
}