What’s a Function?
Operators
An “operator” in a program looks like your Math book:
5 + 10 # Addition 10 - 5 # Subtraction 21 * 2 # Multiplication 21 / 7 # Division
What about Square Roots?
We don’t have a symbol for square root.
Our keyboards are pretty limited.
My first computer could only display 127 characters
Functions!
- Has a name
- Usually has an “input”
- Returns an “output”
sqrt(36)
(sqrt 36)
