$ make
$ make install

maxnum = 10
i = 2

func is_prime(n)
    local j = 2
    while j * j < n + 1
        if n % j == 0
            return False
        end
        j += 1
    end
    return True
end

while i <= maxnum
    if is_prime(i)
        print(i)
    end
    i += 1
end

- Use CAPITALIZED_WITH_UNDERSCORES for macros/constants.
- Object-oriented style code use:
    CObject_UppperCameCaseMethod for functions.
    Object_DataName for data.
- Procedure style code
    module_method for functions.
    method_data for data.
- Function start with '_' must be used internally and carefully.
- All C code except third-party libraries should be formated by ./indent.sh.