print("自定義函數, 寫在程式裡面")


def area(radius):
    result = radius * radius * 3.14
    return result


def washingMachine():
    print("注水")
    print("輕柔清洗")
    print("洗淨洗劑")
    print("脫水")
    print("烘乾")


washingMachine()


def washingMachine(mode):
    print("注水")
    if mode == "soft":
        print("輕柔清洗")
    elif mode == "hard":
        print("強力清洗")
    else:
        print("一般清洗")


mode = "soft"
if mode == "soft":
    print("輕柔清洗")
elif mode == "hard":
    print("強力清洗")
else:
    print("一般清洗")


print("自定義函數, 無參數")


def mycnt1():
    for i in range(10, 20, 5):
        print(i)


mycnt1()

print("自定義函數, 有參數")


def mycnt2(n):
    for i in range(10, n, 5):
        print(i)


mycnt2(30)

print("自定義函數, 有參數，有預設值")


def mycnt3(n=20):
    for i in range(10, n, 5):
        print(i)


mycnt3()
mycnt3(30)

print("自定義函數, 多個參數")


def mycnt4(n1=10, n2=20):
    for i in range(n1, n2, 5):
        print(i)


mycnt4()
mycnt4(5)
mycnt4(5, 15)

print("函數返回值")


def mysum(n1, n2):
    "函數的說明"
    return n1 + n2


print(mysum(10, 20))


def f(x):
    return x**2


f(10)


def add(x, y):
    return x + y


z = add(1234, 5678)
print(z)


# 撰寫接受任意數目引數的函式
def avg(first, *rest):
    return (first + sum(rest)) / (1 + len(rest))


a = avg(1, 2)
b = avg(1, 2, 3, 4)

print("average 1", a, "\n")
print("average 2", b, "\n")


def japanese(month):
    month_name = {
        1: "睦月",
        2: "如月",
        3: "彌生",
        4: "卯月",
        5: "皐月",
        6: "水無月",
        7: "文月",
        8: "葉月",
        9: "長月",
        10: "神無月",
        11: "霜月",
        12: "師走",
    }
    try:
        response = month_name[month]
    except:
        response = "請輸入月份數字。"

    return response


print(japanese(5))


def add2number(a, b):
    global d
    c = a + b
    d = a + b
    print("在函數中，(c={}, d={})".format(c, d))
    return c


c = 10
d = 99
print("呼叫函數前，(c={}, d={})".format(c, d))
print("{} + {} = {}".format(2, 2, add2number(2, 2)))
print("函數呼叫後，(c={}, d={})".format(c, d))


def add(n1, n2):
    return n1 + n2


def sub(n1, n2):
    return n1 - n2


print(add(5, 2))  # 7
print(sub(5, 2))  # 3


def ctof(c):  # 攝氏轉華氏
    f = c * 1.8 + 32
    return f


inputc = float(input("請輸入攝氏溫度："))
print("華氏溫度為：%5.1f 度" % ctof(inputc))