-- Ask questions on the terminal and read the answers.
local io = require("@neyuki/io")
local name = io.prompt("What is your name? ")
if (name == nil or name == "") then name = "stranger" end
io.write("Hello, ", name, "!\n")
local age = io.prompt("How old are you? ", "n")
if (age == nil) then
io.stderr:write("that was not a number\n")
else
io.write("In ten years you will be ", age + 10, ".\n")
end