Update readability

[ivanPeshterskii]

Summary

This PR refactors the console sample to improve readability and maintainability.
The functionality of the sample remains unchanged.

Changes

• Replaced do...while(true) with while(true) for clearer control flow
• Extracted magic numbers into named constants
• Simplified Console.WriteLine formatting
• Introduced intermediate variables to improve readability
• Updated Console.ReadKey() to Console.ReadKey(true) to prevent echoing the pressed key in the console

Reason for change

The original version of the sample used inline formatting and magic numbers, which made the code slightly harder to read and maintain.
These changes make the example easier to understand, especially for developers who are learning console input and basic string processing.

Impact

• No functional changes
• No breaking changes
• Improves clarity and maintainability of the sample

Testing

The sample was compiled and executed to confirm that the behavior remains the same.