在学生类中添所学课程的成绩表(一维数组),并处理成绩(增删查改)

最新推荐文章于 2022-11-18 21:49:43 发布

原创最新推荐文章于 2022-11-18 21:49:43 发布 · 557 阅读

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CC 4.0 BY-SA版权

本文介绍了一个简单的学生信息管理系统，该系统使用Java实现，包括添加、删除、更新和展示学生成绩的功能。通过控制台输入输出进行交互，支持动态添加成绩并调整已存在的成绩。

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public class Student {

	private int num;
	private String name;
	private String sex;
	private String hobbies;
	private int[] score = new int[50];

	public void add() {
		System.out.println("学生成绩添加");
		// System.out.println("请输入5个成绩");
		// for(int i=0;i<5;i++){
		// Scanner scanner = new Scanner(System.in);
		// int s = scanner.nextInt();
		// score[i]=s;
		// }
		System.out.println("请输入成绩:");
		Scanner scanner = new Scanner(System.in);
		int s = scanner.nextInt();
		int index = 0; // 记录数组目前有多少个元素
		for (int s2 : score) {
			if (s2 != 0) {
				index++;
			}
		}
		this.score[index] = s;
	}

	public void delete() {
		System.out.println("学生成绩删除");
		System.out.println("要删除哪个分数?");
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		for (int i = n; i < n - 1; i++) {
			score[i - 1] = score[i];
		}
		int[] temp = new int[5];
		int j = 0;
		for (int i = 0; i < 5; i++) {
			if (i != n - 1) {
				temp[j] = score[i];
				j++;
			} else {
				temp[j] = score[i + 1];
				j++;
				i++;
			}
		}
		score = temp;
	}

	public void update() {
		System.out.println("学生成绩修改");
		System.out.println("要修改哪个分数?改为多少分?");
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		int s = scanner.nextInt();
		score[n - 1] = s;
	}

	public void showScore() {
		// System.out.println("学生成绩查询");
		System.out.println("学生成绩为:");
		for (int s : score) {
			if (s != 0) {
				System.out.println(s);
			}
		}
	}

	public void showHobbies() {
		System.out.println("我的兴趣是:" + this.hobbies);
	}

	public Student(int num, String name, String sex, String hobbies) {
		super();
		this.num = num;
		this.name = name;
		this.sex = sex;
		this.hobbies = hobbies;
	}

	public void setScore(int[] score) {
		this.score[0] = score[0];
		this.score[1] = score[1];
		this.score[2] = score[2];
		this.score[3] = score[3];
		this.score[4] = score[4];
	}

	public static void main(String[] args) {
		Student student = new Student(1, "张三", "男", "篮球，羽毛球，游泳");
		int[] s = { 91, 92, 93, 94, 95 };
		student.setScore(s);
		// student.showHobbies();
		student.add();
		// student.delete();
		// student.update();
		student.showScore();
	}

}