The function given is not a good candidate to be placed in a library because the person that created the library is trying to update the global variables for both player1Points and player2Points.
The function is not a good candidate to be placed in a library reason being that the person that created the library is trying to update the global variables for both player1 and player2.
Reason being that this update is often carried out inside of a function, and the updated scores for player1 and player2 won't be kept except someone creates the global variables player1Points and player2Points in their own program.
Inconclusion the function given is not a good candidate to be placed in a library.
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