Question

用java写一个学生出勤的程序，求高手解答！！！

有四个同学；
满分30分
1：迟到一次扣一分；(显示迟到次数)
2：旷课一次扣3分；（显示旷课次数）
3：回答问题加一分；（显示回答问题次数）
4：旷课8次总分为0.
执行程序显示出 学生学号，学生姓名，迟到次数，旷课次数，回答问题次数，最后总计分数

Answer 1

如果你是用后台输入：
import java.util.*;

Scanner sc=new Scanner(System,in);
String str=sc.next();//后台读取一个字符串
int i=sc.nextInt();//后台读取一个int型
double i=sc.nextDouble();//后台读取一个double型

相信计算的过程楼主自己也知道怎么做了。

Answer 2

看下这个类似代码，模仿来做
class Test
{
public static void main(String[] args){
KaoShi ks1 = new KaoShiKe(90,80,70,60);
KaoShi ks2 = new KaoChaKe(60,70,80,90);
System.out.println(ks1.chengJi);
System.out.println(ks2.chengJi);
}
}

abstract class KaoShi
{
double chengJi;
double chuQing;
double zuoYe;
double shiYan;
double qiMo;
}
class KaoShiKe extends KaoShi
{
//出勤*10%+作业*10%+实验*10%+期末*70%
KaoShiKe(double chuQing,double zuoYe,double shiYan,double qiMo){
this.chuQing = chuQing;
this.zuoYe = zuoYe;
this.shiYan = shiYan;
this.qiMo = qiMo;
this.chengJi = chuQing/10+zuoYe/10+shiYan/10+qiMo*7/10;
}
}
class KaoChaKe extends KaoShi
{
//出勤*20%+作业*10%+实验*10%+期末*60%
KaoChaKe(double chuQing,double zuoYe,double shiYan,double qiMo){
this.chuQing = chuQing;
this.zuoYe = zuoYe;
this.shiYan = shiYan;
this.qiMo = qiMo;
this.chengJi = chuQing*2/10+zuoYe/10+shiYan/10+qiMo*6/10;
}
}

希望对你有帮助