C语言标准库的头文件

C Standard Library header files - cppreference.com

值得一提的是，在cppreference的网页中，可以看到最下方列出的C语言的最新标准已经是2023年的了。

C Standard Library header files

The interface of C standard library is defined by the following collection of headers.

File name	Desc	描述
<assert.h>	Conditionally compiled macro that compares its argument to zero	有条件编译宏，将其参数与零比较
<complex.h> (since C99)	Complex number arithmetic	复数运算
<ctype.h>	Functions to determine the type contained in character data	确定字符数据类型的函数