11-3-6

shie

def apply_discount(price, discount):
    # 1. 檢查 price 是否為數字
    if not isinstance(price, (int, float)) or isinstance(price, bool):
        return "The price should be a number"

    # 2. 檢查 discount 是否為數字
    if not isinstance(discount, (int, float)) or isinstance(discount, bool):
        return "The discount should be a number"

    # 3. 檢查 price 是否大於 0
    if price <= 0:
        return "The price should be greater than 0"

    # 4. 檢查 discount 是否介於 0 到 100
    if discount < 0 or discount > 100:
        return "The discount should be between 0 and 100"

    # 5. 計算折扣後的價格
    final_price = price - (price * discount / 100)

    # 6. 回傳最終價格
    return final_price


# 測試程式
print(apply_discount(50, 20))
print(apply_discount(100, 10))
print(apply_discount(200, 50))
print(apply_discount(50, 100))