自己做的，有不足之处还望指点
import java.util.Scanner;
class 容量{
int 载人;
int 载货;
}
class 汽车{
String name;
int rent;
容量 capacity;
}
public class 哒哒搭车{
static void showcar(){
}
public static void main(String[] args) {
汽车 car[]=new 汽车[6];
for(int i=0;i<6;i++){
car[i]=new 汽车();
car[i].capacity=new 容量();
}
car[0].name="奥迪A4";
car[1].name="马自达6";
car[2].name="皮卡雪6";
car[3].name="金龙";
car[4].name="松花江";
car[5].name="依维柯";
car[0].rent=500;
car[1].rent=400;
car[2].rent=450;
car[3].rent=800;
car[4].rent=400;
car[5].rent=1000;
car[0].capacity.载人=4;
car[1].capacity.载人=4;
car[2].capacity.载人=4;
car[2].capacity.载货=2;
car[3].capacity.载人=20;
car[4].capacity.载货=4;
car[5].capacity.载货=20;
System.out.println("欢迎使用哒哒搭车系统\n你是否要租车：1 是 0 否");
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
if(n==1){
System.out.println("你可租车的类型及其价目表：");
System.out.println("序号\t汽车名称\t 租金\t\t容量 ");
for(int i=0;i<6;i++){
System.out.print(i+1+"\t"+car[i].name+"\t"+car[i].rent+"元/天");
if(car[i].capacity.载货==0)
System.out.println(" 载人："+car[i].capacity.载人+"人");
else if(car[i].capacity.载人==0)
System.out.println(" 载货："+car[i].capacity.载货+"吨");
else
System.out.println(" 载人："+car[i].capacity.载人+"人 载货："+car[i].capacity.载货+"吨");
}
System.out.println("请输入你要租车的数量");
n=sc.nextInt();
int s[]=new int [n];
for(int i=1;i<=n;i++){
System.out.println("请输入第"+i+"辆车的序号：");
s[i-1]=sc.nextInt();
}
System.out.println("请输入租车天数：");
int t=sc.nextInt();
System.out.println("你的账单：");
System.out.println("***可载人的车有：");
int sum=0;
for(int i=0;i<n&&car[i].capacity.载人!=0;i++){
System.out.print(car[s[i]-1].name+" ");
sum+=car[s[i]-1].capacity.载人;
}
System.out.println("共载人："+sum+"人");
System.out.println("***可载货的车有：");
sum=0;
for(int i=0;i<n;i++){
if(car[i].capacity.载货!=0){
System.out.print(car[s[i]-1].name+" ");
sum+=car[s[i]-1].capacity.载货;
}
}
System.out.println("共载货："+sum+"吨");
sum=0;
for(int i=0;i<n;i++)
sum+=car[s[i]-1].rent*t;
System.out.println("***租车总价格："+sum+"元");
}
else
System.exit(0);
}
}
