十二章 课后第五题

package cn.bdqn2; //商品类
public class Shang {      
    int jia=(int)(Math.random()*10000+1);  
    public int a(){  
    int b=(int)(Math.random()*10);  
    switch(b){  
    case 0:  
    case 1:  
    case 2:  
    case 3:  
        System.out.print("请猜测\"公主电动车\"的价格:");  
        break;  
    case 4:  
    case 5:  
    case 6:  
        System.out.print("请猜测\"公主汽车\"的价格:");  
        break;  
    case 7:  
    case 8:  
    case 9:  
        System.out.print("请猜测\"公主自行车\"的价格:");  
        break;  
    }  
    return b;  
    }      
}  

import java.util.*;  
public class Jia {  ///猜价格
    Scanner input=new Scanner(System.in);  
    Shang a=new Shang();  
    int b;  
    public void a(){  
        for(int i=1;i<=4;i++){  
            b=input.nextInt();  
            if(b==a.jia){  
                System.out.println("猜对了!");  
                break;  
            }  
            if(i==4){  
                System.out.println("\n4次没有猜对,下次努力吧!");  
                break;  
            }  
            if(b>a.jia){  
                System.out.print("再小点!");  
            }else if(b<a.jia){  
                System.out.print("再大点!");  
            }  
            System.out.print("\n再猜一次吧:");  
        }  
    }  
}

public class Ceshi {///测试

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Shang a=new Shang();  
        Jia b=new Jia();  
        a.a();  
        b.a();  

	}

}