Python TQC考題406 不定數迴圈-BMI 計算,while True

#Python TQC考題406 不定數迴圈-BMI 計算

#第二次做的比較好理解

h=eval(input())
state=””

while h!=-9999:
w=eval(input())
if w == -9999:
break
else:
bmi=w/(h/100)**2
if bmi<18.5:
state=”underweight”
elif 18.5<=bmi<25:
state=”normal”
elif 25.0<=bmi<30:
state=”over weight”
elif 30<=bmi:
state=”fat”
else:
break
print(“BMI:{:.2f}”.format(bmi))
print(“State:”+state)
h=eval(input())

#少這一段,第一次正常,

#之後就能輸入體重,

#身高套用第一次輸入的數值

#轉貼到WP縮排已亂

#做第二次:

print(“請輸入您的身高1st”)
hight=eval(input())
state=””

while hight != -9999:
print(“請輸入你的體重”)
weight = eval(input())
if weight == -9999:break
else:bmi=weight/((hight/100)**2)

#容易忘記身高/100,將cm換算成m

if bmi<18.5:state=”under weight”

elif 18.5<=bmi<25:state=”normal”

elif 25.0<=bmi<30:state=”over weight”

elif 30 <= bmi:state=”fat”

else:break

print(“BMI:{:.2f}”.format(bmi))
print(“State:{:}”.format(state))

print(“請輸入你的身高_迴圈內”)
hight=eval(input())

#第三次做

print(“please input your hight”)
hight = eval(input())
state=””

while hight!=-9999:
print(“please input your weight,-9999 quit”)
weight=eval(input())

if weight==-9999:break
else: bmi=weight/((hight/100)**2)

“””

這一段可將

bmi=weight/((hight/100)**2)

接在weight=eval(input())  之後

刪掉else

“””

if bmi<18.5:state=”under weight”
elif 18.5<=bmi<25:state=”normal”
elif 25.0<=bmi<30:state=”over weight”
elif 30<=bmi:state=”fat”

print(“BMI: {:.2f}”.format(bmi))
print(“State: {}”.format(state))

print(“please input your hight.-9999 quit”)
hight=eval(input())

“””

while迴圈內要再寫一次

hight=eval(input()) 容易漏

少寫這一段,

hight永遠是迴圈外

第一次輸入的數值

刻意區別迴圈外的hight

往前一行 print(“please input your hight.-9999 quit”)

多寫-9999 quit 提示這時候在迴圈內

“””

#bmi前面沒有非要else

#state起始值其實只要空字串即可