JAVASE If 单选择、双选择及镶嵌笔记

//单选
package com.huang.boke.flowPath;

import java.util.Scanner;

public class test02 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入内容");

String s = scanner.nextLine();
//equals:判断字符串是否相等
if (s.equals("hello")) {
System.out.println(s);

}
System.out.println("end");

scanner.close();

}
}

package com.huang.boke.flowPath;

import java.util.Scanner;

public class IfTest {
//判断是否及格
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("输入成绩");
int score = scanner.nextInt();
if (score>=60){
System.out.println("及格");

}
else {
System.out.println("不及格");
}


scanner.close();



}
}
//镶嵌
package com.huang.boke.flowPath;

import java.util.Scanner;

public class IfDome {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("输入成绩");
int score = scanner.nextInt();
if (score==100){
System.out.println("s级");
}else if (score>=80 && score<=99){
System.out.println("a级");
}else if (score>=60 && score<=79){
System.out.println("b级");
}else if (score<60 && score>=0) {
System.out.println("c级");
}else {
System.out.println("无效");
}






scanner.close();
}
}
posted @ 2021-02-04 16:19  spking  阅读(68)  评论(0)    收藏  举报