差数和
1 #!/usr/bin/env python
2 # -*- coding: utf-8 -*-
3
4 i = 1
5 o = 0
6 while i <= 99:
7 if i % 2 ==1:
8 o = o + i
9 elif i % 2 == 0:
10 o = o - i
11 else:
12 print('玩蛋')
13 #print(i)
14 #qishu = i % 2 == 1
15 #for i in qishu:
16 # print(i)
17 i += 1
18 print(o)
總結(jié)
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