java基础_day0006_判断_switch_case

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package day02;//* *  * 判断成绩 * */public class Score {public static void main(String[] args) {/* * 90<=x <=100为优秀 * 80<=x <=90为良好 * 70<=x <=80为一般 * 60<=x <=70为及格 * x <60为及格 * *///方法一：double score=78.0;if(score>=90 && score<=100){System.out.println("成绩为：优秀");}else if(score>=80 && score<90){System.out.println("成绩为：良好");}else if(score>=70 && score<80){System.out.println("成绩为：一般");}else if(score>=60 && score<70){System.out.println("成绩为：及格");}else if(score<60){System.out.println("成绩为：不及格");}//方法二：int s=-99;switch(s/10){   case 10:      case 9:   System.out.println("优秀");   break;   case 8:   System.out.println("良好");   break;   case 7:   System.out.println("一般");   break;   case 6:   System.out.println("及格");   break;   case 5:   case 4:   case 3:   case 2:   case 1:   case 0:   System.out.println("不及格");   break;   default:   System.out.println("输入成绩");}}}

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