I think you need some global variables to record something.
The prototype is really easy so I skipped the comments, I think you can understand the code in no time.
In this code the number run from 0 to 10 and then from 10 to 0 repeatly.
I think you need some global variables to record something.
The prototype is really easy so I skipped the comments, I think you can understand the code in no time.
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