long和int数据类型之间的区别 [英] Difference between long and int data types

问题描述

考虑到以下语句返回 4 ， int 和 long C ++中的类型？

Considering that the following statements return 4, what is the difference between the int and long types in C++?

sizeof(int)
sizeof(long)

推荐答案

从 this reference：

From this reference:

一个int原本是为
自然字大小的
处理器。许多现代处理器可以
处理不同的字大小，等于
ease。

An int was originally intended to be the "natural" word size of the processor. Many modern processors can handle different word sizes with equal ease.

p>

Also, this bit:

在许多（但不是全部）C和C ++
实现上，long大于
和int。今天最流行的桌面
平台，如Windows和Linux，
主要运行在32位处理器和
这些平台上的大多数编译器使用
a 32位int具有相同的大小
和表示为长。

On many (but not all) C and C++ implementations, a long is larger than an int. Today's most popular desktop platforms, such as Windows and Linux, run primarily on 32 bit processors and most compilers for these platforms use a 32 bit int which has the same size and representation as a long.

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