3.学生成绩问题,如果是A,成绩优秀,B,成绩良好,C,成绩一般,D,成绩及格,E,重考
(用switch循环)
package com.Newclass.Study;
public class ClassWork3 {
public static void main(String[] args) {
String grade="A";
switch(grade) {
case "A":
System.out.println("成绩优秀");
break;
case "B":
System.out.println("成绩良好");
break;
case "C":
System.out.println("成绩一般");
break;
case "D":
System.out.println("成绩及格");
break;
case "E":
System.out.println("重考");
break;
}
}
}
public static void main(String[] args) {
String grade="A";
switch(grade) {
case "A":
System.out.println("成绩优秀");
break;
case "B":
System.out.println("成绩良好");
break;
case "C":
System.out.println("成绩一般");
break;
case "D":
System.out.println("成绩及格");
break;
case "E":
System.out.println("重考");
break;
}
}
}
输出结果:成绩优秀
4.学生成绩问题,60以下不及格,60-70及格,70-80一般,80-90良好。90-100优秀。
(用if{}else{})
(用if{}else{})
package com.Newclass.Study;
public class ClassWork4 {
public static void main(String[] args) {
int grade = 99;
if(grade <= 60) {
System.out.println("不及格");
}else if(grade <= 70 && grade >= 61) {
System.out.println("及格");
}else if(grade <= 80 && grade >= 71){
System.out.println("一般");
}else if(grade <= 90 && grade >= 81) {
System.out.println("良好");
}else if(grade <= 100 && grade >= 91) {
System.out.println("优秀");
}
}
public static void main(String[] args) {
int grade = 99;
if(grade <= 60) {
System.out.println("不及格");
}else if(grade <= 70 && grade >= 61) {
System.out.println("及格");
}else if(grade <= 80 && grade >= 71){
System.out.println("一般");
}else if(grade <= 90 && grade >= 81) {
System.out.println("良好");
}else if(grade <= 100 && grade >= 91) {
System.out.println("优秀");
}
}
}
输出结果:优秀