#Multiple if with statement

# Scenario 1: if-else 敘述

if condition1:
   do A
else:
   do B

# Scenario 2: if...elif...else 敘述 (條件1 或條件2...或以上皆非)

if condition1:
   do A
elif condition2:
   do B
else:
   do C

# Scenario 3: if 敘述 (條件符合則繼續)

if condition1:
   do A
if condition2:
	 do B
if condition3: 
   do C

#Scenario 4: 巢狀if敘述

if condition1:
    do A
elif condition2:
    if condition21:
        do B
    elif condition22:
        do C
    elif condition23:
				do D
else:
   do E

• 繪製流程圖工具

• 補充: Python3 條件語句

Day3-1 exercise check odd number

mynumber= int(input("Which number do you want to check?"))

#巢狀 if...else
if mynumber % 2 ==0:
    print("this is a even number")
    age = int(input("what is your cage?"))
    if age <12:
        print("you shall pay $5")
    elif age <=18:
        print("you shall pay $7")
    else:
        print("you shall pay $12")        
else:
    print("this is a odd number")

Day3-2 exercise BMI Caculator

hieght = int(input("please input your hieght:"))
weight = int(input("please input your wieght:"))
bmi = weight / ((hieght/100) **2)
print("BMI={:.2f}".format(bmi))

#多選條件選一, 最後以上皆非 
if bmi < 18.5:
    print("BMI is under weight")
elif bmi <25:
    print("BMI is normal weight")
elif bmi <30:
    print("BMI is overweight")
elif bmi < 35:
    print("BMI is obese")
else:
    print("BMI is clinically obese")

Day3-3 exercise Leap Year