2020-03-15课堂笔记
作者：互联网
Main
package edu.xcdq;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入你的名次");
int count = scanner.nextInt();
if (count == 1){
System.out.println("去麻省理工参加夏令营");
}
if (count == 2){
System.out.println("送笔记本");
}
if (count ==3){
System.out.println("送硬盘一个");
}
switch (count){
case 1:
System.out.println("去麻省理工参加夏令营");
break;
case 2:
System.out.println("送笔记本一个");
break;
case 3:
System.out.println("送硬盘一个");
break;
}
}
}
demo02
import java.util.Scanner;
/**
* @qvthor liuwenzheng
* @date 2021/3/15 10:16
*/
public class demo02 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入您要拨的号码");
int num = scanner.nextInt();
switch (num){
case 1:
System.out.println("拨爸爸的号码");
break;
case 2:
System.out.println("拨妈妈的号码");
break;
case 3:
System.out.println("拨奶奶的号码");
break;
case 4:
System.out.println("拨爷爷的号码");
break;
}
}
}
demo03
package edu.xcdq;
import javax.swing.plaf.synth.SynthOptionPaneUI;
import java.util.Scanner;
/**
* @qvthor liuwenzheng
* @date 2021/3/15 10:32
*/
//登录页面
public class demo03 {
public static void main(String[] args) {
System.out.println("登录菜单");
System.out.println("1 登录系统");
System.out.println("2 退出");
System.out.println("请输入你要的功能");
Scanner scanner = new Scanner(System.in);
if (scanner.hasNextInt()){
int bianhao = scanner.nextInt();
if (bianhao == 1){
System.out.println("你已进入购物系统，欢迎使用");
System.out.println("1 客户管理系统");
System.out.println("2 购物结算");
System.out.println("3 真情回馈");
System.out.println("4 注销");
if (scanner.hasNextInt()){
int bianhao2 = scanner.nextInt();
switch (bianhao2){
case 1:
System.out.println("购物管理系统>客户信息管理");
System.out.println("1 显示所有客户信息");
System.out.println("2 添加客户信息");
System.out.println("3 修改客户信息");
System.out.println("4 查询客户信息");
int bainhao3 = scanner.nextInt();
switch (bainhao3){
case 1:
System.out.println("zs");
System.out.println("lis");
System.out.println("ma5");
break;
}
break;
case 2:
System.out.println("购物管理系统>购物结算");
System.out.println("请输入消费金额");
Scanner scanner1 = new Scanner(System.in);
double sum = scanner1.nextDouble();
System.out.println("是否参加优惠换购活动");
System.out.println("1 满50元，加2元换购百事可乐一瓶");
System.out.println("2 满100元，加3元换购500ml可乐一瓶");
System.out.println("3 满100元，加10元换购1个苏泊尔炒菜锅");
System.out.println("4 满200元，加20元换购欧兰雅爽肤水一瓶");
System.out.println("0 ，不换购。");
System.out.println(" 请选择");
int funNO = scanner.nextInt();
switch (funNO) {
case 1:
if (sum >= 50) {
System.out.println("本次消费金额" + (sum + 2));
System.out.println("成功换购百事可乐一瓶");
} else
System.out.println("你消费的金额不足已参加本次活动");
break;
case 2:
if (sum >= 100) {
System.out.println("本次消费金额" + (sum + 3));
System.out.println("成功换购500ml可乐一瓶");
} else {
System.out.println("你消费的金额不足已参加本次活动");
}
break;
case 3:
if (sum >= 100) {
System.out.println("本次消费金额" + (sum + 10));
System.out.println("成功换购，苏泊尔炒菜锅");
} else {
System.out.println("你消费的金额不足已参加本次活动");
}
break;
case 4:
if (sum >= 200) {
System.out.println("本次消费金额" + (sum + 20));
System.out.println("成功换购，爽肤水一瓶");
}else {
System.out.println("你消费的金额不足已参加本次活动");
}
break;
case 0:
System.out.println("不换购");
System.out.println("本次消费金额为" + sum);
}
case 3:
System.out.println("真情回馈");
System.out.println("1 幸运大放送");
System.out.println("2 幸运抽奖");
System.out.println("3 生日问候");
break;
case 4:
System.out.println("注销");
break;
}
}
}else if (bianhao == 2){
System.out.println("你已经推出");
}else {
System.out.println("你输入编号不符合要求");
}
}else {
System.out.println("你输入的不是整数，请重新输入");
}
}
}
demo04
package edu.xcdq;
import java.util.Scanner;
/**
* @qvthor liuwenzheng
* @date 2021/3/15 11:18
*/
public class demo04 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入消费金额:");
System.out.println("是否参加优惠换购活动");
System.out.println("1 是");
System.out.println("2 否");
int huodong = scanner.nextInt();
if (huodong == 1) {
System.out.println("你已参加优惠换购活动");
System.out.println("1 满50元，加2元换购百事可乐一瓶");
System.out.println("2 满100元，加3元换购500ml可乐一瓶");
System.out.println("3 满100元，加10元换购1个苏泊尔炒菜锅");
System.out.println("4 满200元，加20元换购欧兰雅爽肤水一瓶");
System.out.println("5 ，不换购。");
System.out.println(" 请选择");
int money = scanner.nextInt();
switch (money){
case 1:
System.out.printf("money + 2");
break;
case 2:
System.out.printf("money+3");
break;
case 3:
System.out.printf("money+10");
break;
case 4:
System.out.printf("money+ 20");
break;
}
}else if (huodong==3){
System.out.printf("");
}
}
}
标签：case,03,15,换购,System,break,2020,println,out 来源： https://blog.csdn.net/lwz01/article/details/115479314