Symbolic constants are named values in a program that remain unchanged throughout the execution, enhancing code readability and maintainability by replacing magic numbers with meaningful identifiers. They are typically defined at the beginning of a program or module and can be used across multiple functions and procedures to ensure consistency and ease of updates.

Symbolic Constants

Symbolic constants

named values

Magic numbers are arbitrary constants in code that lack explanation or context, making the code less readable and maintainable. Replacing magic numbers with named constants or variables enhances code clarity and reduces the risk of errors during future updates.

magic numbers

meaningful identifiers

Code readability refers to how easily a human reader can understand and navigate through the source code of a program. It is crucial for maintaining, debugging, and extending software, as well as for facilitating collaboration among developers.

code readability

Code maintainability refers to the ease with which a software system or component can be modified to correct defects, improve performance, or adapt to a changed environment. High maintainability is achieved through clear code structure, documentation, modular design, and adherence to coding standards, which collectively reduce the cost and effort of future modifications.

Code Maintainability

beginning of a program

Program module

multiple functions

procedures

Consistency refers to the steadfast adherence to the same principles or course of action over time, which fosters reliability and trust. It is essential in various fields, from personal habits to business practices, as it creates predictability and stability, allowing for the measurement of progress and effectiveness.

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