C编译器为什么指定长为32位和long long是64位？ [英] Why do C compilers specify long to be 32-bit and long long to be 64-bit?

问题描述

那岂不是更有意义，使长64位和长长的保留，直到128位的数字成为现实？

Wouldn't it have made more sense to make long 64-bit and reserve long long until 128-bit numbers become a reality?

推荐答案

是的，这有一定道理，但微软有自己的理由定义为32位长。

Yes, it does make sense, but Microsoft had their own reasons for defining "long" as 32-bits.

据我所知，所有现在主流的系统，Windows是长是32位的唯一操作系统。在Unix和Linux，它是64位的。

As far as I know, of all the mainstream systems right now, Windows is the only OS where "long" is 32-bits. On Unix and Linux, it's 64-bit.

对于Windows所有的编译器编译长在Windows 32位，以保持与微软的兼容。

All compilers for Windows will compile "long" to 32-bits on Windows to maintain compatibility with Microsoft.

由于这个原因，我避免使用Int和长。偶尔我会用INT错误codeS和布尔（C语言），但我从来没有把它们用于任何code是依赖于类型的大小。

For this reason, I avoid using "int" and "long". Occasionally I'll use "int" for error codes and booleans (in C), but I never use them for any code that is dependent on the size of the type.

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