C 或 C++ 中的大整数

Big integer in C or C++

提问by user507401

I was working on a factorial program, and the program didn't work when trying to find the factorial of 1000. I think big integers are the solution; how do they work? (In either C or C++)

我正在研究一个阶乘程序，当试图找到 1000 的阶乘时该程序不起作用。我认为大整数是解决方案；它们是如何工作的？（在 C 或 C++ 中）

回答by Flexo

GMPcan do bigintoperations for both C and C++. The documentation on that site is a good introduction, if you use the C++ classes they behave almost exactly like built-in primitive types.

GMP可以bigint对 C 和 C++进行操作。该站点上的文档是一个很好的介绍，如果您使用 C++ 类，它们的行为几乎与内置原始类型完全相同。

回答by Leonidas

Look for the GMP. See the other question regarding this topic:

寻找 GMP。请参阅有关此主题的其他问题：

• Handling very large Integers
• C++ Big Integer

• 处理非常大的整数
• C++ 大整数