getppid - get parent process ID

Syntax	#include <unistd.h> Optional #include <sys/types.h> (End) pid_t getppid(void);
Description	getppid() returns the parent process ID of the calling process.
Return val.	Parent process ID of the calling process. The function is always successful.
See also	exec, fork(), getpgrp(), getpid(), kill(), setpgid(), setsid(), sys/types.h, unistd.h.