blocks|key|5959451|text|如果不知道要为哪个CPU编译代码，这是很困难的。假设Microchip针对PIC18的C18编译器，User+Guide规定了以下基本类型大小：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5959452|TYPE++++++++++++++++SIZE+++++RANGE
char(1,2)++++++++++++8+bits++-128+127
signed+char++++++++++8+bits++-128+127
unsigned+char++++++++8+bits++0+255
int+++++++++++++++++16+bits++-32,768+32,767
unsigned+int++++++++16+bits++0+65,535
short+++++++++++++++16+bits++-32,768+32,767
unsigned+short++++++16+bits++0+65,535
short+long++++++++++24+bits++-8,388,608+8,388,607
unsigned+short+long+24+bits++0+16,777,215
long++++++++++++++++32+bits++-2,147,483,648+2,147,483,647
unsigned+long+++++++32+bits++0+4,294,967,295|code-block|syntax|javascript|5959453|请注意，这包括一些不是C语言标准的类型(short+long)。|style|CODE|5959454|entityMap|0|LINK|mutability|MUTABLE|url|http://ww1.microchip.com/downloads/en/DeviceDoc/C18_User_Guide_51288j.pdf^0|1E|A|0|0|0|K|A|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@$A|10|B|11|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

This is hard without knowing for which CPU you want to compile code. Assuming e.g. Microchip's C18 compiler for the PIC18, the <a href="http://ww1.microchip.com/downloads/en/DeviceDoc/C18_User_Guide_51288j.pdf" rel="noreferrer">User Guide</a> states the following fundamental type sizes:

<pre><code>TYPE SIZE RANGE
char(1,2) 8 bits -128 127
signed char 8 bits -128 127
unsigned char 8 bits 0 255
int 16 bits -32,768 32,767
unsigned int 16 bits 0 65,535
short 16 bits -32,768 32,767
unsigned short 16 bits 0 65,535
short long 24 bits -8,388,608 8,388,607
unsigned short long 24 bits 0 16,777,215
long 32 bits -2,147,483,648 2,147,483,647
unsigned long 32 bits 0 4,294,967,295
</code></pre>

Note that this includes some types (<code>short long</code>) that are not standard in C.

blocks|key|5959503|text|int、long等的值永远不会在所有编译器(reference)中进行标准化定义。因此，建议使用该库：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5959504|#include+<stdint.h>|code-block|syntax|javascript|5959505|要将该库用于您自己的目的，请尝试使用以下代码：|5959506|typedef+uint8_t++++BYTE
typedef+uint16_t+++WORD
typedef+uint32_t+++LONG|5959507|然后你只需要用它们来定义你的变量。此方法通常使用一个整型.h文件来存储这些定义，并在需要时包含在其中。|5959508|entityMap|0|LINK|mutability|MUTABLE|url|http://ww1.microchip.com/downloads/en/DeviceDoc/52053B.pdf^0|M|9|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|C|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

Values for int, long, etc., are never standardly defined across all compilers(<a href="http://ww1.microchip.com/downloads/en/DeviceDoc/52053B.pdf" rel="nofollow">reference</a>) . For this reason, it is advised to make use of the library:

<pre><code>#include &lt;stdint.h&gt;
</code></pre>

To make use of this library for your own purposes, try using the code as follows:

<pre><code>typedef uint8_t BYTE
typedef uint16_t WORD
typedef uint32_t LONG
</code></pre>

Then you just use these to define your variables. This method usually makes use of an integer.h file to store these definitions and is included wherever needed.

blocks|key|4543620|text|下面是整数数据类型在不同MPLAB+XC编译器上的实现。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4543621|8位设备的|4543622|数据类型(在XC8编译器上实现)：|ordered-list-item|4543623|4543624|📷|atomic|offset|length|4543625|​|4543626|16位设备的|4543627|数据类型(在XC16编译器上实现)：|4543628|4543629|4543630|4543631|32位设备的|4543632|数据类型(在XC32编译器上实现)：|4543633|4543634|4543635|4543636|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/855635938a34133a8b0077e01a82b517.jpeg|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/b2733de94b8753b7f7dc3d1541a8dbed.jpeg|2|https://ask.qcloudimg.com/http-save/yehe-900000/b88b59edc2905ff033129979a5a74501.jpeg^0|0|0|0|0|0|1|0|0|0|0|0|0|0|1|1|0|0|0|0|0|0|1|2|0|0^^$0|@$1|2|3|4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1G|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1H|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|1J|8|@]|9|@$K|1K|L|1L|1|1M]]|A|$]]|$1|M|3|N|5|6|7|1N|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1O|8|@]|9|@]|A|$]]|$1|Q|3|R|5|F|7|1P|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|T|3|I|5|J|7|1R|8|@]|9|@$K|1S|L|1T|1|1U]]|A|$]]|$1|U|3|N|5|6|7|1V|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1W|8|@]|9|@]|A|$]]|$1|X|3|Y|5|F|7|1X|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|10|3|I|5|J|7|1Z|8|@]|9|@$K|20|L|21|1|22]]|A|$]]|$1|11|3|N|5|6|7|23|8|@]|9|@]|A|$]]|$1|12|3|-4|5|6|7|24|8|@]|9|@]|A|$]]]|13|$14|$5|15|16|17|A|$18|19|1A|-4]]|1B|$5|15|16|17|A|$18|1C|1A|-4]]|1D|$5|15|16|17|A|$18|1E|1A|-4]]]]

Here is the implementation of integer data types on different MPLAB XC compilers. 

<ol>
<li>Data Types for 8-bit devices (implementation on XC8 compiler):
<a href="https://i.stack.imgur.com/1uV3l.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1uV3l.jpg" alt="enter image description here"></a></li>
<li>Data Types for 16-bit devices (implementation on XC16 compiler):
<a href="https://i.stack.imgur.com/u2JZH.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/u2JZH.jpg" alt="enter image description here"></a></li>
<li>Data Types for 32-bit devices (implementation on XC32 compiler):<a href="https://i.stack.imgur.com/OxrRK.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OxrRK.jpg" alt="enter image description here"></a></li>
</ol>

blocks|key|1832899|text|我会对这样的概括保持警惕。MPLAB只是一个IDE+-它适用于不同的芯片。Microchip有8位控制器，如PIC18F、16位和32位控制器。每种类型的数据类型可能不同，并且会对性能产生严重影响。也就是说，对于8位芯片，16位和32位数据类型可以在软件中模拟，这并不总是你想要的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1832900|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I would be wary of such generalizations. MPLAB is just an IDE - it is suitable for different chips. Microchip has 8-bit controllers like PIC18F, 16-bit and 32-bit controllers. The data types for each may be different and hold serious implications for performance. I.e. for the 8-bit chips the 16 and 32 bit data types may be emulated in software, which isn't always what you want.

blocks|key|2431501|text|#include<stdint.h>
long+x;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2431502|这两件事帮助我完成了;)和其余的信息。已经被其他人分享了。|unstyled|2431503|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>#include&lt;stdint.h&gt;
long x;
</code></pre>

These two things helped me get through ;)
And the rest info. is already shared by other folks.

In MPLAB IDE what is the sizes of data types (<code>int</code>, <code>unsigned int</code>, <code>float</code>, <code>unsigned float</code>, <code>char</code>...)?

MPLAB IDE data type sizes

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在MPLAB IDE中，数据类型(int、unsigned int、float、unsigned float、char...)的大小是多少？

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