-- Rock-Paper-Scissors -- starter.
-- Run with: lua projects/rock-paper-scissors/starter.lua

io.write("Choose rock, paper, or scissors: ")
local player = io.read()

-- TODO 1: pick the computer's move at random (1..3) and turn the number
--         into "rock", "paper", or "scissors" with if / elseif / else.

-- TODO 2: print what the computer chose.

-- TODO 3: decide the result with if / elseif / else:
--   - not a valid choice
--   - a tie (same move)
--   - you win (rock>scissors, paper>rock, scissors>paper)
--   - otherwise you lose