9.循环
死循环
while 1==1:
print('ok')
程序1-------------
import time
count = 0
while count < 10:
print('ok',time.time())
count = count + 1
print('final')
程序2-------------
求1--100的和
a = 1
b = 0
while a < 101:
b = b + a
a = a + 1
print(b)
程序3---------
输出1--100内所有的奇数
a = 1
while a < 101:
if a % 2 == 1:
print(a)
else:
pass
a = a + 1
程序4-------------------
输出 1 2 3 4 5 6 8 9 10
a = 1
while a < 11:
if a != 7:
print(a)
else:
pass
a = a + 1
程序5---------
输出 1---100之内所有的偶数
a = 1
while a < 101:
if a % 2 ==0:
print(a)
else:
pass
a = a + 1
程序6------------------
输出1 - 2 + 3 - 4 + 5 - 6 …………- 98 + 99的结果
a = 1
b = 0
while a < 100:
if a % 2 == 1:
b = b + a
else:
b = b - a
a = a + 1
print(b)