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Continue to ChatMember functions that are used in reading from and writing to Binary file https://www.thetqweb.com/cplusplus/member-functions-that-are-used-in-reading-from-and-writing-to-binary-file/
Member functions that are used in reading from and writing to Binary file https://www.thetqweb.com/cplusplus/member-functions-that-are-used-in-reading-from-and-writing-to-binary-file/