Why is the input string in the algorithm in Section 4.5.2 converted to an integer inside the loop instead of immediately when the value is read from the user?

The input string is converted to an integer inside the loop to allow for continuous validation and processing of user input. This approach enables the algorithm to handle multiple inputs or re-prompts if the user provides invalid data. By deferring the conversion, it ensures that the program can respond dynamically to user errors, maintaining a smooth user experience and preventing premature termination of the input process.