Li Yunting has a voice like Tang Yu, but she doesn't know how to pretend to understand. This is a new course this morning. In the afternoon, I came to the computer to practice. Tang Yu didn't come again. Why?

"The code is typed well, but it's not very standard. Two semicolons are missing on this side and this side." Tang Yu pointed to Li Yunting, then added it, and clicked on the debugging, then the result of debugging appeared. This is a slightly more complex program, the code of the calculator. There are a lot of codes, but Li Yunting wrote them correctly, only two semicolons were missing.

"Ah!"...