- import java.util.Scanner;
- public class Ch01
- {
- 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("D能兒,分母不可為零!");
- System.out.println(x+"/"+y+"="+(x/y));
- }
- }
- class MyException extends Exception
- {
- public MyException(String str)
- {
- super(str);
- }
- }
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