自动出题系统加减乘除代码

自动出题系统的代码通常会涉及到随机数生成、运算符选择以及条件判断等功能。这里是一个简单的Python代码示例，用于创建一个可以随机出加减乘除题目并提供答案的功能：

import random

def generate_question():
    # 运算符列表
    operators = ['+', '-', '*', '/']

    # 随机选取两个操作数和一个运算符
    num1 = random.randint(1, 100)
    num2 = random.randint(1, 100)
    operator = random.choice(operators)

    if operator == '+':
        answer = num1 + num2
    elif operator == '-':
        answer = num1 - num2
    elif operator == '*':
        answer = num1 * num2
    else:  # division, 需要考虑除数是否为零的情况
        while num2 == 0 or num1 % num2 == 0:
            num2 = random.randint(1, 99)  # 避免除数为零
        answer = num1 / num2

    question = f"{num1} {operator} {num2}"
    return question, answer

# 测试函数
while True:
    q, a = generate_question()
    print(f"题目：{q}")
    user_answer = float(input("请输入答案："))
    if round(user_answer, 2) == a:
        print("答对了!")
    else:
        print(f"错误，正确答案是 {a}")