← 🌙 Lua World

🌙 Coin Counter

★★☆☆☆ · worth 100 points

You can practise without a player, but pick a player to score points!

📖 The mission

Today you unlock

Loops inspect each item

Many levels use a loop: start with a simple value, visit each item, update the answer, then return it at the end.

💡 Hint ladder

Loop through a table with: for _, coin in ipairs(coins) do ... end
Start a total at 0 and add each coin: total = total + coin

🧪 Coach checks

◯ three bags
◯ no coins is 0
◯ one big bag
◯ lots of bags

Live coach

Getting ready

☆☆☆

💬 ipairs walks through a table one item at a time.

function countItems(items)
  local count = 0
  for _, item in ipairs(items) do
    count = count + 1
  end
  return count
end

print(countItems({"sword", "map", "apple"}))  -- 3

📟 It printed:

📟 Output