【Python學堂】新手入門第四篇-Python的流程控制：判斷

if bool:
        True程式區塊

if bool:
        True程式區塊
else:
        False程式區塊

if bool:
        程式區塊
elif bool:
        程式區塊
elif bool:
        程式區塊
else:
        程式區塊

passedCount = 0
chinese = int(input("請輸入國文成績:"))
english = int(input("請輸入英文成績:"))
math = int(input("請輸入數學成績:"))
if chinese >= 60:
    passedCount += 1

if english >= 60:
    passedCount += 1

if math >= 60:
    passedCount += 1

print("及格的科目數量是:{:d}".format(passedCount))

#700分及格
scores = int(input("請輸入學生總分數"))
if scores >= 700:
    state = '及格'
else:
    state = '不及格'
print('學生總分為{:d},分數:{:s}'.format(scores,state))

scores = int(input('請輸入學生總分數:'))
if scores >= 900:
    state = '優等'
elif scores >= 800:
    state = '甲等'
elif scores >= 700:
    state = '乙等'
elif scores >= 600:
    state = '丙等'
else:
    state = '丁等'
print('學生總分為{:d},分數:{:s}'.format(scores,state))

BMI值計算公式:    
BMI = 體重(公斤) / 身高(公尺)平方

name = input('請輸入您的姓名')
height = float(input('請輸入您的身高(cm)'))
weight = float(input('請輸入您的體重(kg)'))
bmi = weight / (height/100) ** 2
print("%s的身高是 %.2f公分" % (name, height))
print("%s的體重是 %.2f公斤" % (name, weight))


if bmi < 18.5:
    state = "體重過輕"
elif bmi < 24:
    state = "非常標準"
elif bmi < 27:
    state = "過重"
elif bmi < 30:
    state = "輕度肥胖"
elif bmi < 35:
    state = "中度肥胖"
else:
    state = "過重"

print("{:s}的bmi是{:d},狀態:{:s}".format(name,int(bmi),state))