是C中的大小; INT＆QUOT; 2字节或4字节？ [英] Is the size of C "int" 2 bytes or 4 bytes?

问题描述

请问C中的整型变量占用2个字节或4个字节？哪些因素，这取决于？

Does an Integer variable in C occupy 2 bytes or 4 bytes? What are the factors that it depends on?

大多数的教科书都说整数变量占用2个字节。
但是，当我运行一个程序打印整数数组的连续地址就显示4的区别。

Most of the textbooks say integer variables occupy 2 bytes. But when I run a program printing the successive addresses of an array of integers it shows the difference of 4.

推荐答案

我知道这是等于的sizeof（INT）。的大小 INT 真的是编译器相关的。早在一天，当处理器是16位，一个 INT 为2个字节。现今，这是最常见的是32位的系统上的4个字节或64比特的系统的8个字节。

I know it's equal to sizeof(int). The size of an int is really compiler dependent. Back in the day, when processors were 16 bit, an int was 2 bytes. Nowadays, it's most often 4 bytes on a 32 bits system or 8 bytes on 64 bits system.

不过，使用的sizeof（INT），是为执行该程序的特定系统的整数大小的最佳方式。

Still, using sizeof(int) is the best way to get the size of an integer for the specific system the program is executed on.

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