Could you tell me how to design the three item of program should be?

CodePudding user response:

This BBS is not responsible for providing the most fundamental questions of source

You can do, as long as it is to write their own, can send up to ask questions if you have any questions

CodePudding user response:

I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10581430.html
I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10768339.html