The C compiler is accompanied by a number of useful functions and macros called the C standard library. These functions are defined in standard-library header files. To use the C standard-library functions, we simply include the appropriate header into our program. Here are some of the C standard-library headers:
Available in all C standards: | |
|---|---|
<assert.h> | Assertion macros |
<ctype.h> | Utils for individual characters |
<errno.h> | Macros reporting error conditions |
<float.h> | Floating type limits |
<limits.h> | Sizes of basic types |
<locale.h> | Localization utils |
<math.h> | Math functions ... |
