编写一个程序:要求从DOS控制台以提问对话的形式,输入三个同学的姓名、年龄、c语言成绩与java成绩,并将成绩保存到一个“chengji.txt”的文件中. 提示: 创建一个Student学生类,其中域变量包括name,age,javaScore和

cScore，并使用FileWriter将学生信息写入到文件中。

以下是Java代码示例：

import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class Student {
    private String name;
    private int age;
    private double javaScore;
    private double cScore;

    public Student(String name, int age, double javaScore, double cScore) {
        this.name = name;
        this.age = age;
        this.javaScore = javaScore;
        this.cScore = cScore;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public double getJavaScore() {
        return javaScore;
    }

    public double getCScore() {
        return cScore;
    }

    public static void main(String[] args) throws IOException {
        Scanner scanner = new Scanner(System.in);
        FileWriter writer = new FileWriter("chengji.txt");

        for (int i = 0; i < 3; i++) {
            System.out.println("请输入第" + (i + 1) + "个同学的姓名：");
            String name = scanner.next();
            System.out.println("请输入第" + (i + 1) + "个同学的年龄：");
            int age = scanner.nextInt();
            System.out.println("请输入第" + (i + 1) + "个同学的Java成绩：");
            double javaScore = scanner.nextDouble();
            System.out.println("请输入第" + (i + 1) + "个同学的C语言成绩：");
            double cScore = scanner.nextDouble();

            Student student = new Student(name, age, javaScore, cScore);
            writer.write(student.getName() + " " + student.getAge() + " " + student.getJavaScore() + " " + student.getCScore() + "\n");
        }

        writer.close();
        scanner.close();
    }
}

运行程序后，在控制台输入三个同学的姓名、年龄、Java成绩和C语言成绩，然后程序会将这些信息写入到一个名为“chengji.txt”的文件中。每个同学的信息占用一行，各项之间用空格分隔。