What are the advantages and disadvantages of dividing code into functions?

Advantages of dividing code into functions:

• Improved readability and ease of maintenance.
• Reuse of code without duplication.
• Easier testing of individual parts of the program.
• Simplification of debugging and error localization.

Disadvantages:

• Excessive fragmentation can complicate understanding the overall logic.
• Small functions are weakly connected, which sometimes makes it difficult to track the flow of execution.
• Incorrect design of functions can lead to excessive coupling or, conversely, to fragmentation of logic.

It is important to find a balance between modularity and readability.