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This is because the data inputted from the console is usually real-time and interactive, meaning that the program can prompt the user to enter specific data and respond accordingly. On the other hand, when reading data from a file, the program has to handle a pre-existing set of data that may not be formatted in the way it expects or require additional processing to make it usable. Additionally, the program may encounter errors or exceptions when reading from a file, which can affect its intended outcome. Overall, the program must be designed to handle both console and file input in a way that accommodates potential differences in data type, structure, and input method.