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整形函数就是整数
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比方说4
10
非整形函数包括
浮点型
非常数型
带
小数点
的都叫非整形~
整型常量就是平时算术上写的没有小数点的整数，由阿拉伯数字1234567890组成，整型常量包括正数负数和0。常量是说从程序开始到结束，数值始终保持不变的量。
整型变量用变量名字表示。整型变量的数值从程序开始到结束可能变化，例如运算和输入。类似代数里的x,y,z.
所有编程语言里都有整型常量和整型变量，这是最常用最普通的类型。
通常泛指char、short int、int、long int、long long int这五种类型（包括signed和unsigned）以及_Bool类型。当然也包括编译器作为扩展而实现的某些整型类型。
见C11标准：
[6.2.5-4]There are five standard signed integer types, designated as signed char, short int, int, long int, and long long int. (These and other types may be designated in several additional ways, as described in 6.7.2.) There may also be implementation-defined extended signed integer types. The standard and extended signed integer types are collectively called signed integer types.
[6.2.5-6]For each of the signed integer types, there is a corresponding (but different) unsigned integer type (designated with the keyword unsigned) that uses the same amount of storage (including sign information) and has the same alignment requirements. The type _Bool and the unsigned integer types that correspond to the standard signed integer types are the standard unsigned integer types. The unsigned integer types that correspond to the extended signed integer types are the extended unsigned integer types. The standard and extended unsigned integer types are collectively called unsigned integer types.
延展阅读：
C语言是一门通用计算机编程语言，应用广泛。C语言的设计目标是提供一种能以简易的方式编译、处理低级存储器、产生少量的机器码以及不需要任何运行环境支持便能运行的编程语言。
尽管C语言提供了许多低级处理的功能，但仍然保持着良好跨平台的特性，以一个标准规格写出的C语言程序可在许多电脑平台上进行编译，甚至包含一些嵌入式处理器（单片机或称MCU）以及超级电脑等作业平台。