谁能知道我出了什么问题，因为我是统一错误 CS0165 的新手：使用未分配的局部变量 'diff'

Question

enter image description here error CS0165: Use of unassigned local variable 'diff'

enter image description here

1 : htstrong texttps://i.stack.imgur.com/bML6I.png

Answer 1

I believe this must be happening because you need a specific condition to set the diff variable. If that condition is not met, you're not setting it at all.

To fix try setting the diff variable to some value in the else statement on line 27.

Let me know if that works for you.

Vlad