67 lines
1.3 KiB
Python
67 lines
1.3 KiB
Python
# 算术运算符
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print(5 + 3) # 加法
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print(5 - 3) # 减法
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print(5 * 3) # 乘法
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print(5 / 3) # 除法，结果为浮点数
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print(5 // 3) # 整除，结果为整数
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print(5 % 3) # 取模（余数）
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print(5 ** 3) # 幂运算
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# 比较运算符
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print(5 == 3) # 等于
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print(5 != 3) # 不等于
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print(5 > 3) # 大于
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print(5 < 3) # 小于
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print(5 >= 3) # 大于等于
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print(5 <= 3) # 小于等于
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# 赋值运算符
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x = 5
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x += 3 # x = x + 3
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print(x)
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x -= 3 # x = x - 3
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print(x)
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x *= 3 # x = x * 3
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print(x)
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x /= 3 # x = x / 3
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print(x)
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x //= 3 # x = x // 3
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print(x)
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x %= 3 # x = x % 3
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print(x)
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x **= 3 # x = x ** 3
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print(x)
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# 逻辑运算符
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a = True
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b = False
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print(a and b) # 逻辑与
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print(a or b) # 逻辑或
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print(not a) # 逻辑非
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"""
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基础：计算表达式 7 + 3 * (10 / 2) 的结果。
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"""
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result = 7 + 3 * (10 / 2)
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print(result)
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"""
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应用：编写一个条件语句，判断一个数是正数、负数还是零。
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"""
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num = 10
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if num > 0:
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print(f"{num}是正数")
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elif num == 0:
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print(f"{num}是零")
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else:
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print(f"{num}是负数")
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"""
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挑战：使用逻辑运算符，编写一个表达式来判断一个年份是否是闰年（能被4整除且不能被100整除，或者能被400整除）。
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"""
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year = 2008
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if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
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print(f"{year}是闰年")
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else:
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print(f"{year}是平年") |