巨大数四则运算简单代码

在处理巨大数的四则运算时，通常会使用高精度算法，比如大整数库或内置支持大数的编程语言特性。这里以Python为例，它有一个内建的`decimal`模块可以方便地进行高精度计算。

from decimal import Decimal

def add_large_numbers(num1, num2):
    return str(Decimal(num1) + Decimal(num2))

def subtract_large_numbers(num1, num2):
    return str(Decimal(num1) - Decimal(num2))

def multiply_large_numbers(num1, num2):
    return str(Decimal(num1) * Decimal(num2))

def divide_large_numbers(num1, num2):
    try:
        return str(Decimal(num1) / Decimal(num2))
    except ZeroDivisionError:
        return "除数不能为零"

# 示例
num1 = '12345678901234567890'
num2 = '98765432109876543210'

print(add_large_numbers(num1, num2))  # 输出加法结果
print(subtract_large_numbers(num1, num2))  # 输出减法结果
print(multiply_large_numbers(num1, num2))  # 输出乘法结果
print(divide_large_numbers(num1, num2))  # 输出除法结果