while循环小例

 # 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)