解鎖高薪機會：Python 初學者編程

def add(num1, num2):

    """返回两个数字的和。"""

    return num1 + num2

def subtract(num1, num2):

    """返回两个数字的差。"""

    return num1 - num2

def multiply(num1, num2):

    """返回两个数字的乘积。"""

    return num1 * num2

def divide(num1, num2):

    """返回两个数字的商。"""

    return num1 / num2

def main():

    """获取用户输入并显示结果。"""

    num1 = float(input("输入第一个数字："))

    num2 = float(input("输入第二个数字："))

    operation = input("输入操作（+、-、*、/）：")

    result = 0

    if operation == "+":

        result = add(num1, num2)

    elif operation == "-":

        result = subtract(num1, num2)

    elif operation == "*":

        result = multiply(num1, num2)

    elif operation == "/":

        result = divide(num1, num2)

    else:

        print("无效的操作。")

    print("结果：", result)

if __name__ == "__main__":

    main()