Hi Everyone,
I need a way to schedule multiple (to be precise three different processes) infinitely running processes that I am creating to be scheduled initially and then later they may run in parallel fashion.
The code is something like this:

int main()
{
fork() //forking the main process
if (parent)
//will invoke the signal handler for Ctrl+C, for killing all childs
if (child)
{
fork() //fork again
if(parent1)
// run 1st infinite process
else // if child1
fork() //fork again
if(parent2)
//run 2nd infinite process
else //when child2
//run 3rd infinite process
}
}

I need process1 to start first and then process2 should get started and then process3. Later they may run parallel !

and what has been done so far? Do you have any problem?

The more common idiom is to exec other programs from the child process after a fork. This gives the parent process the ability to wait() on the child, so the process table doesn't get cluttered with zombies.
--- rod.

Not to be flippant here, but what if you simply write a shell-script that uses the '&' suffix to launch the three processes? Possibly with nohup? They won't be children of the parent process and you might have to prevent multiple-copies, but it would be "the shortest way to get there."