1. Define an array of length 10 to store the names of students, and complete the following functions of the student management system based on this array: 1. Enroll in 2. Withdraw from school 3. View all students 4. Find out if there is a student 5. Exit the system. Before the user selects "5. Exit the system", the first four functions can be used repeatedly.
– View all students
– Admission
– Withdrawal
– Find out if the student exists
– Exit the system
2. Grading rules
(1) Define an array of length 10 to store the names of class students (5 points)
(2) The menu is written correctly (10)
①The loop processing is correct (5 points)
②The branch structure is correct (5 points)
(3) Entrance function (15 points)
①Able to register successfully (5 points)
②Can not register successfully after the class is full and give corresponding prompts (5 points)
③If the class is full of 10 people, it can be registered correctly (5 points)
(4) Withdrawal function (10 points)
①Successfully withdraw from school (you can no longer find the school after you quit) (5 points)
②There is no student who wants to quit school to prompt (5 points)
(5) View all student functions (10 Points)
①There are students in the class that can be displayed correctly (only the name of the student is displayed, and the empty data is not displayed) (5 points)
②There is no student in the class with a prompt (5 points)
(6) Find whether the student has a function (10 points)
①Can find this Students give hints (5 points)
②No students can give hints correctly (5 points)
(7) Exit the system function (5 points)
public class Test1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String[] students = new String[10];
int index = 0;//学生的下标
out:while(true) {
System.out.println("欢迎使用学生管理系统");
System.out.println("1.入学 2.退学 3.查看所有学生 4.查找指定学生 5,。退出系统");
int num = sc.nextInt();
switch (num) {
case 1:
System.out.println("请输入要入学的学生姓名");
String name = sc.next();
//先判断 数组已经满了
if(index<10) {
students[index]=name;
index++;
System.out.println("注册成功");
}else {
System.out.println("学员已经满了,不能再注册了");
}
break;
case 2:
System.out.println("请输入要退学的学员");
String name3 = sc.next();
boolean f2 = false;
for (int i = 0; i < index; i++) {
if(name3.equals(students[i])) {
f2=true;//将后面的元素覆盖前面的元素
for (int j = 1; j < index-1; j++) {
students[j]=students[j+1];
}
//总人数-1
index--;
System.out.println("退学成功");
break;
}
}
if(f2==false) {
System.out.println("查无此人");
}
break;
case 3:
for (int i = 0; i < index; i++) {
System.out.println(students[i]);
}
break;
case 4:
System.out.println("请输入要查找的学生");
String name2 = sc.next();
boolean f = false;
for (int i = 0; i < index; i++) {
if(name2.equals(students[i])) {
f=true;
break;
}
}
if(f) {
System.out.println("找到了");
}else {
System.out.println("不存在此学员");
}
break;
case 5:
System.out.println("退出系统");
break out;
default:
System.out.println("输入错误,请重新输入");
break;
}
}
}
}