Question: In the update to the tic - tac - toe game that introduced loops, why are the variables col and row set to 0 after

In the update to the tic-tac-toe game that introduced loops, why are the variables col and row set to 0 after each for loop?
The code won't compile without them there.
It ensures the validation loop will run correctly on the next turn.
They could be initialized to any value at all.
For improved readability

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