Application not accepting my correct code

Question

In c++ course, there is countdown project. So, i wrote the code and ran it, it outputted what was expected, but the application doesn't accept it and says it does give expected output, try again.

https://code.sololearn.com/c8B7zfXF612X/?ref=app

Answer 1

B should be uppercase in Beep

Answer 2

Share your code here.

Answer 3

Thanks didn't notice that

Answer 4

https://code.sololearn.com/c8B7zfXF612X/?ref=app