Question: A 3-character string, userPassword, is read from input. Replace each character in userPassword that is not a digit with .'. Otherwise, userPassword is not changed.

A 3-character string, userPassword, is read from input. Replace each character in userPassword that is not a digit with ".'. Otherwise, userPassword is not changed. Ex: If the input is y86, then the output is: 86 12345678910111213141516#include
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