python day9 作业

1、使用while循环输入 1 2 3 4 5 6 8 9 10

2、求1-100的所有数的和

3、输出1-100内的所有奇数

4、输入1-100内所有偶数

5、求1-2+3-4+5···99的所有数的和

6、用户登录（三次机会重试）

作业1

n = 1
while n <= 10:
    if n == 7:
        pass
    else:
        print(n)
    n = n + 1

print('---end---')

作业2

n = 1
s = 0
while n <= 100:
  s = s + n
  n = n + 1
print(s)
print('---end---')

作业3

n = 1
while n <= 100:
    if n % 2 == 0:
        pass
    else:
        print(n)
    n = n + 1

print('---end---')

作业4

n = 1
while n <= 100:
    if n % 2 == 1:
        pass
    else:
        print(n)
    n = n + 1

print('---end---')

作业5

n = 1
s = 0
while n <= 100:
    if n % 2 == 0:
        s = s - n
    else:
        s = s + n
    n = n + 1
print(s)
print('---end---')