# 使用while 循环输入 1 2 3 4 5 6  8 9 10

 n = 1

 while n <= 10:

     if n == 7:

         pass

     else:

         print(n)

     n = n + 1

 # 求1-100的所有数的和

 n = 1

 count = 0

 while n <= 100:

     count = count + n

     n = n + 1

 print(count)

 # 输出1-100 内的所有奇数

 n = 1

 while n <= 100:

     if n % 2 == 1:

         print(n)

     n = n + 1

 # 输出1-100 内的所有偶数

 n = 1

 while n <= 100:

     if n % 2 == 0:

         print(n)

     n = n + 1

 # 求 1-2+3-4+5...99的所有数的和

 n = 1

 count = 0

 while n <= 99:

     if n % 2 == 1:

         count = count + n

     elif n % 2 == 0:

         count = count - n

     n = n + 1

 print(count)