Python_005_求1-2+3-4+

发布时间:2019-09-20 07:27:16编辑:auto阅读(1879)

    n = 1
    s = 0
    while n < 100:
        temp = n % 2
        if temp == 0:
            s = s - n   
        else:
            s = s + n                       
        n = n + 1
    print(s)

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