JAVA 第四次实验

 

 

import java.util.Scanner;


public class StudentDemo {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		@SuppressWarnings("resource")
		Scanner sc=new Scanner(System.in);
		int g1,g2,g3;
		while(true)
		{
			System.out.println("输入研究生的三门成绩（输入-1结束输入）：");
			g1=sc.nextInt();
			if(g1==-1)
				break;
			g2=sc.nextInt();
			g3=sc.nextInt();
			Graduate a=new Graduate(g1,g2,g3);
			a.ispass();
		}
		while(true)
		{
			System.out.println("输入本科生的三门成绩（输入-1结束输入）：");
			g1=sc.nextInt();
			if(g1==-1)
				break;
			g2=sc.nextInt();
			g3=sc.nextInt();
			Undergraduate a=new Undergraduate(g1,g2,g3);
			a.ispass();
		}
	}

}
class Student
{
	int grade1,grade2,grade3;
	Student(int grade1,int grade2,int grade3)
	{
		this.grade1=grade1;
		this.grade2=grade2;
		this.grade3=grade3;
	}
}
class Undergraduate extends Student
{
	Undergraduate(int x,int y,int z)
	{
		super(x,y,z);
	}
	void ispass()
	{
		if(grade1+grade2+grade3>=180)
		{
			System.out.println("该本科生通过");
		}
		else
			System.out.println("该本科生未通过");
	}
}
class Graduate extends Student
{
	Graduate(int x,int y,int z)
	{
		super(x,y,z);
	}
	void ispass()
	{
		if(grade1+grade2+grade3>=240)
		{
			System.out.println("该研究生通过");
		}
		else
			System.out.println("该研究生未通过");
	}
}