# Tutorial 2: Variables and Math
# Goal: Store values in variables and do arithmetic.
#
# JTS is dynamically typed: x = 42. Optional type hints: int age = 25.
# Operators: + - * / % and bitwise & | ^ ~ << >>
# str(x) converts numbers so you can join them with +.

name = "Alex"
age = 7
say("Hi, " + name + "!")
say("In 3 years you will be " + str(age + 3))

pi = 3.14159
say("Pi doubled: " + str(pi * 2))
say("Remainder of 17 / 5: " + str(17 % 5))

# Challenge: compute and print the area of a circle with radius 4.