1 i = 2 2 sum=0 3 while i<=100: 4 if i % 2 == 0: 5 sum += i 6 else: 7 sum -= i 8 i += 1 9 print ‘sum:‘,sum
1 i = 2 2 sum=0 3 while i<=100: 4 if i % 2 == 0: 5 sum += i 6 else: 7 sum -= i 8 i += 1 9 print ‘sum:‘,sum
使用while循环实现输出2-3+4-5+6.....+100的和。
原文：https://www.cnblogs.com/Python-XiaCaiP/p/8521506.html