Age Calculator

Generate it:

lumen --examples age

yearNow = 2026
userYear = 0
println 'Hello, world!'
print 'Enter your birth year: '
inputInt &userYear
age = yearNow - userYear
print 'Your age: '
println age

A minimal but complete program: it declares two variables, reads an integer from the user with inputInt, does one subtraction, and prints the result with a mix of print and println.

Touches: variables, input/output, arithmetic operators.