A simple coding challenge has gone viral on Dev.to, a community for software developers. The "Guess a Number from 4-Digit" game asks users to enter a four-digit PIN code and then generates a random number. If the user's input matches the generated number, the program outputs a message saying "Pin Code Matched." Otherwise, it reveals the correct answer.

Source: https://dev.to/adelasmar/guess-a-number-from-4-digit-2gde