Big programs are built from small functions that call each other, like LEGO. Write one tiny function, then reuse it inside a bigger one. This idea is called composition.
🎯 Write square(n). Then write sumOfSquares(a, b) that uses square() twice to return a² + b².
Output
Press Run to see what your code prints.Lesson 1 of 16 · Lesson map · Your code runs safely inside this page and is never sent anywhere.