Average - Lua

--Using LOVE2D API
function love.load()
    input={}
    curNum="wee"
end

function love.keypressed(key)
    if tonumber(key:sub(#key, #key)) then
        if curNum=="wee" then curNum=="" end
        curNum=curNum..tonumber(key:sub(#key, #key))
    elseif key=="return" and not curNum=="wee" then
        input[#input+1]=curNum
        curNum="wee"
    else
        local num=0
        for i, v in pairs(input) do
            num=num+v
        end
        num=num/#input
        print(num)
    end
end