编写一个100以内的整数加减乘除练习器

好的，以下是一个简单的100以内的整数加减乘除练习器的Python代码：

import random

# 生成随机数
def generate_number():
    return random.randint(1, 100)

# 加法练习
def addition():
    num1 = generate_number()
    num2 = generate_number()
    answer = num1 + num2
    user_answer = int(input(f"{num1} + {num2} = "))
    if user_answer == answer:
        print("回答正确!")
    else:
        print(f"回答错误! 正确答案为{answer}")

# 减法练习
def subtraction():
    num1 = generate_number()
    num2 = generate_number()
    answer = num1 - num2
    user_answer = int(input(f"{num1} - {num2} = "))
    if user_answer == answer:
        print("回答正确!")
    else:
        print(f"回答错误! 正确答案为{answer}")

# 乘法练习
def multiplication():
    num1 = generate_number()
    num2 = generate_number()
    answer = num1 * num2
    user_answer = int(input(f"{num1} * {num2} = "))
    if user_answer == answer:
        print("回答正确!")
    else:
        print(f"回答错误! 正确答案为{answer}")

# 除法练习
def division():
    num1 = generate_number()
    num2 = generate_number()
    # 确保num2不为0
    while num2 == 0:
        num2 = generate_number()
    # 计算答案，保留两位小数
    answer = round(num1 / num2, 2)
    user_answer = float(input(f"{num1} / {num2} = "))
    if user_answer == answer:
        print("回答正确!")
    else:
        print(f"回答错误! 正确答案为{answer}")

# 主程序
print("欢迎使用100以内的整数加减乘除练习器!")
print("请选择练习类型:")
print("1. 加法")
print("2. 减法")
print("3. 乘法")
print("4. 除法")
choice = int(input("请输入您的选择: "))
if choice == 1:
    addition()
elif choice == 2:
    subtraction()
elif choice == 3:
    multiplication()
elif choice == 4:
    division()
else:
    print("无效的选择!")

运行程序后，用户可以选择四种不同的练习类型：加法、减法、乘法和除法。程序会随机生成两个数字，并计算正确答案。用户需要输入自己的答案，程序会根据用户的输入给出相应的评价。