During which phase does a programmer create a second version of a program based on customer feedback?

The phase during which a programmer creates a second version of a program based on customer feedback is the implementation phase. This phase involves taking the initial version of a program, which has likely gone through some level of testing and review, and making improvements or changes based on user input and feedback.

Implementation typically follows the initial development and may include iterative cycles of coding, testing, and revising to enhance functionality or fix any issues identified by users. The programmer uses the feedback received during testing or from end-users to refine the software, ensuring it aligns more closely with user expectations and requirements.

In contrast, planning is focused on defining the project scope, requirements, and overall design without involving direct changes to the program. The testing phase is primarily concerned with identifying bugs and verifying that the software meets its specifications rather than creating new versions based on feedback. Documentation involves creating manuals and guides but does not include modifying the program itself.