Consider the following C program. All functions return normally. Make a fork diagram and explain every step.

Example how to solve and make a diagram.

fork(); printf("Hello "); fork(); printf("Hello "); 

Now draw the diagram (where H is for the print statement):

 +--- H -- | +--- H --+--- H -- | | +--- H -- | | ------+--- H --+--- H --

Actual problem to solve. Make same diagram format one I showed at top for this one.

int pid = 0; void sigchild(int s) { printf("You"); fflush(stdout); if (pid) { kill(pid, SIGHUP); } } void sighup(int s) { printf("are"); fflush(stdout); if (!pid) { kill(getppid(), SIGHUP); } } int main() { int status; pid_t p; Signal(SIGCHLD, sigchild); Signal(SIGHUP, sighup); int i; if ((pid = fork()) == 0) { kill(getppid(), SIGHUP); // getppid returns parents pid sleep(1); exit(0); } sleep(1); if ((p = wait(&status)) > 0) { fprintf(stderr, "silly"); } else { fprintf(stderr, "keep"); } fflush(stdout); return 0; } 

What is the correct output for the above code?