This problem teaches you when to use structs. When you have related values that naturally belong together, group them. Three coordinates form a vector. Keeping them in one struct prevents errors and improves readability.
You learned accumulation with custom types. Structs aren't just for storage. You can perform operations on them, like adding components. This pattern appears in geometry, physics, and game development.
Zero-checking multiple fields is common. When you need all components to satisfy a condition, use logical AND operators. One failure means the entire check fails.