I got everything until to the point that check if the space is emprty or not. I dont know how to do it. can someone give me an example?
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Without knowing how your program and its data are structured, it's almost impossible to answer that question. What's the "switch" you refer to?
Anyway, converting an int 1-9 into row/col values is just simple arithmetic. You need the divide operator / and the remainder operator %
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