libc library contains standard functions that all C programs can use. The following table lists the libc modules:
| Header File | Description |
|---|---|
| alloca.h | Allocates space in the stack |
| assert.h | Diagnostics code |
| ctype.h | Character operations |
| errno.h | System errors |
| inttypes.h | Integer type conversions |
| math.h | Mathematics |
| setjmp.h | Non-local goto code |
| stdint.h | Standard integer types |
| stdio.h | Standard I/O facilities |
| stdlib.h | General utilities functions |
| time.h | Time function |