关键词int的定义是什么 [英] what is the definition on the key word int
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问题描述
大家好,
关键词int的定义是什么。
如何内部工作......
问候,
Shefeek
解决方案
整数(int)类型变量是一个只能保存整数的变量(例如。-2,-1,0,1,2)。一个int是2或4个字节。 />
从这里查看详细信息..
http:// www .learncpp.com / cpp-tutorial / 24-integers / [ ^ ]
例如:16位OS int为2字节,32位OS int为4字节。
< blockquote> int被定义为特定编译器决定合理的任何大小的有符号值。如果我没记错的话,它必须至少是16位。
标准仅定义:
sizeof(char)< = sizeof(short)< = sizeof(int)< = sizeof(long)(等等其他变体'依赖于支持,例如__int64,long long)
(sizeof(t)是提供的t类型的大小(以字节为单位)
Hi all,
what is the definition on the key word int.
How the internal working ....
Regards,
Shefeek
解决方案
An integer(int) type variable is a variable that can only hold whole numbers (eg. -2, -1, 0, 1, 2).An int is either 2 or 4 bytes .
See details from here..
http://www.learncpp.com/cpp-tutorial/24-integers/[^]
for example: in 16 bits OS int is 2bytes, in 32 bits OS int is 4 bytes.
An int is defined as a signed value of whatever size a particular compiler decides is reasonable. If I remember correctly, it must be at least 16-bit.
The standard defines only that:
sizeof(char) <= sizeof(short) <= sizeof(int) <= sizeof(long) (etc. other variant''s depend on support, e.g. __int64, long long)
(sizeof(t) is the size (in bytes) of the type t supplied)
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