Test-19-04-14_1.lua

function main()
    io.write("Press enter to start.")
    io.read()
    
    local x = 0
    
    while true do
        local f = io.open("1904142.txt", "a")
        
        local x = x + math.random()
        
        print(x)
        f:write(x .. "0-0")
        f:close()
        
        if x > 10000 then
            break()
        end
    end
end

main()