- import java.util.Scanner;
- public class Ch50
- {
- static Scanner s=new Scanner(System.in);
- public static void main(String args[])throws MyException
- {
- float x,y;
- System.out.print("輸入分子");
- x=s.nextFloat();
- System.out.print("輸入分母");
- y=s.nextFloat();
- if(y==0)
- throw new MyException("分母不能是0");
- System.out.println(x+"/"+y+"="+(x/y));
- }
- }
- class MyException extends Exception
- {
- MyException(String str)
- {
- super(str);
- }
- }
複製代碼 |