[Solved] What is difference between using a colon (:) when creating a class to use inheritance and the ‘using’ keyword at the top of the program code?

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What is difference between using a colon (:) when creating a class to use inheritance and the ‘using’ keyword at the top of the program code?

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solved What is difference between using a colon (:) when creating a class to use inheritance and the ‘using’ keyword at the top of the program code?