第二章练习

 1 package com.Zuoye;
 2 /*
 3  * 练习1
 4  *@author 张传峰
 5  * time 2018.12.25
 6  */
 7 
 8 import java.util.Scanner;
 9 
10 public class Test1 {
11     public static void main(String[] args) {
12         int custNo;
13         System.out.println("请输入一个四位数：");
14         Scanner input =new Scanner(System.in);//System.in代表系统输入（键盘输入）
15         custNo =input.nextInt();//获从键盘输入的一个整数
16         System.out.println("会员的卡号是："+custNo);
17         int qianwei = custNo/1000;
18         int baiwei = custNo/100%10;
19         int shiwei = custNo/10%10;
20         int gewei = custNo%10;
21         System.out.println("千位："+qianwei+"，百位："+baiwei+"，十位："+shiwei+",个位："+gewei);
22         int num =qianwei+baiwei+shiwei+gewei;
23         System.out.println("各位之和为:"+num);
24         System.out.println(num>20?"恭喜中奖!":"谢谢参与!");
25         
26         
27     }
28 
29 }

 1 package com.Zuoye;
 2 
 3 import java.util.Scanner;
 4 
 5 /*
 6  * 练习2
 7  * @author 张传峰
 8  * time 2018.12.25
 9  */
10 public class Test2 {
11     public static void main (String[] args) {
12         System.out.println("请输入本金：");
13         Scanner input = new Scanner(System.in);
14         double custNo = input.nextInt();
15         System.out.println("本金为："+custNo);
16         double yiNian = custNo+custNo*0.0225;
17         double liangNian = custNo+custNo*0.027*2;
18         double sanNian = custNo+custNo*0.0324*3;
19         double wuNian = custNo+custNo*0.036*5;
20         System.out.println("存入一年后的本息为："+yiNian);
21         System.out.println("存入两年后的本息为："+liangNian);
22         System.out.println("存入三年后的本息为："+sanNian);
23         System.out.println("存入五年后的本息为："+wuNian);
24         
25     }
26     
27 }