Python基础知识一：while循环之2-3+4-5…+100 & 柳叶扉鸿

内容目录

# 写代码 - while 循环
# 使用 while 循环实现输出 2 - 3 + 4 - 5 + 6 ... + 100 的和，即 2-100 的偶数加，奇数减

"""
#   审题问题和思路不对
# total = 0
# num = 1
# while num < 101:
#     if num % 2 == 0:
#         total += num
#         print("01:", total)
#     else:
#         total -= num
#         print("02:", total)
#     num += 1
# print("03:", total)

#   审题问题和思路不对
total = 0
num = 1
while num < 101:
    if num % 2 == 0:
        # total += num
        # print("01:", total)
        print("01:您的分数为：{}".format(total + num))
    else:
        # total -= num
        print("02:您的分数为：{}".format(total - num))
    num += 1
print("03:", total)

#   审题清晰和思路打开，format 不对
total = 0
num = 2
while num < 101:
    if num % 2 == 0:
        # total += num
        # print("01:", total)
        print("01:您的分数为：{}".format(total + num))
    else:
        # total -= num
        print("02:您的分数为：{}".format(total - num))
    num += 1
print("03:", total)
"""

#   最终完成
total = 0
num = 2

while num < 101:
    if num % 2 == 0:  # 2   偶数加，奇数减
        total += num  # 0+2-3+4
        print("01:", total)
        # print("01:您的分数为：{}".format(total + num))
    else:
        total -= num  # 0+2-3+4-5
        print("02:", total)
        # print("02:您的分数为：{}".format(total - num))
    num += 1
print("03:", total)  # 0+2-3+4-5+6-7+8-9...