1 sum = 0 2 count = 1 3 while count < 100: 4 if count %2 ==0: 5 sum -= count 6 else: 7 sum += count 8 count = count + 1 9 print(sum)
Python实现1-2+3-4+5...+99
原文：https://www.cnblogs.com/simpleyf/p/9325983.html
