Props & State

Summary

Props pass data down from parent to child; state is data a component owns and can change over time via `useState` — together they drive everything a React UI displays.

• 1Build a component that receives data via props and displays it.
• 2Build a counter or toggle using `useState` to internalize how state updates trigger re-renders.
• 3Practice lifting state up to a shared parent when two sibling components need the same data.