設(shè)定目標(biāo)值為20厚掷，允許最多猜三次刻帚，對與否都會退出程序：
<pre>num = 20
count = 0
while count < 3:
guess_num = int(input('age:'))
if guess_num == num:
print('you got it !')
break
elif guess_num > num:
print('猜大了儒飒！')
else:
print('猜小了舵盈！')
count = count + 1
若要三次之后仍能繼續(xù)论矾，加入如下代碼：
if count == 3:
countine_confirm = input('do you want to keep guessing...?')
if countine_confirm != 'n':
count = 0
else:
print('再接再厲剃允！')</pre>
