[LUA] Chap. 1 시작하기

[예제]
print("hello! world!")
function fact(n)
  if n == 0 then
    return 1
  else
    return n * fact(n-1)
  end
end
print("enter a number:")
a = io.read("*n")
print(fact(a))


[결과]
hello! world!
enter a number:
5
120


[예제]
function norm(x,y)
  return (x^2 + y^2)^0.5
end
function twice(x)
  return 2*x
end
print(norm(3,4))
print(twice(4))


[결과]
5
8