Program to find the relationship between parent and child in UNIX

#include"myHeader.h"
int main()
{
if(fork())
{
if(fork())
{
if(fork())
printf("parent id :%d\n",getpid());
else
printf("child3 id: %d parent id:%d\n",getpid(),getppid());
}
else
printf("child2 id: %d parent id:%d\n",getpid(),getppid());
}
else
printf("child1 id: %d parent id: %d\n",getpid(),getppid());
}

OutPut:

madan@madan-Lenovo-G570:~/madan/osconcepts$ ./a.out
child1 id: 3514 parent id: 3513
parent id :3513
child2 id: 3515 parent id:3513
child3 id: 3516 parent id:1144

Categories: Interview Purpous, Unix Programing