JAVA小练习15——定义一个函数根据学生的分数，返回成绩对应的等级：100-90为A；89-80为B；79-70为C；69-60为D；59-0为E

public class Demo15 {

	public static void main(String[] args) {
		char grade  =getGrade(26);
		System.out.println("等级："+grade);

	}
	public static char getGrade(int score) {
		char grade=' ';							//初始化grade;
	
		if(score<=100&&score>=90) {	
			grade='A';			
		}else if(score<=89&&score>=80){
			grade='B';
		}else if(score<=79&&score>=70){
			grade='C';
		}else if(score<=69&&score>=60){
			grade='D';
		}else if(score<=59&&score>=0){
			grade='E';
		}else {
			grade='无';
		}
			return grade;	
	}
	

}