1.為何要執行到A=B或A／Ｂ的餘數＝0 2.為何A=B就是質數？？？ A＞＝Ｂ 質數只有1和本身的因數 Ａ／ ２．３．４．５．６．．．直到Ｂ＝Ａ 如果在還沒有直到Ｂ＝Ａ時，Ａ／Ｂ就可以整除 Ａ就是合數【有一個大於1、小於A的因數】 若有小於Ｂ＝Ａ的整數，可以整除Ａ 表示Ａ有其他因數【除了１和本身】 This a very easy program to make. Just click the green and away you go. A long list of square numbers will appear. However, there are some issues with the program, when you get up to certain number you will start to get strange readings eg. infinity. This is just a problem with scratch. You may need to use turbo mode.
THANKS
