I General C Services

This section describes the general services functions for managing processes and converting strings to integers, integers to strings, and other such conversions. These functions are defined in the following header files:

  • assert.h

  • errno.h

  • getopt.h

  • setjmp.h

  • signal.h

  • stdarg.h

  • stdlib.h

  • unistd.h (For the file I/O functions, see POSIX File and Directory Functionsin Volume 1)

  • sys/wait.h

  • sys/utsname.h

The descriptions of these functions, structures, and values have been grouped as follows: