Aug 17, 2026 · 15 min · 7 segments
Until now, you have written instructions in a single continuous block: conditions, loops, calculations, all following one another from top to bottom. This works for small exercises, but as soon as a…
Until now, you have written instructions in a single continuous block.
Conditions, loops, calculations, all following one another from top to bottom.
This works for small exercises, but as soon as a program grows, this approach becomes unmanageable.
The code becomes long, difficult to read, and impossible to reuse.
Modularity is the answer to this problem.
It consists of breaking down a program into small, independent, named units that each perform one clear task.
These units are called functions and procedures.
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Until now, you have written instructions in a single continuous block.
Conditions, loops, calculations, all following one another from top to bottom.
This works for small exercises, but as soon as a program grows, this approach becomes unmanageable.
The code becomes long, difficult to read, and impossible to reuse.
Modularity is the answer to this problem.
It consists of breaking down a program into small, independent, named units that each perform one clear task.
These units are called functions and procedures.
