PAROGRAM1

* Parent - Child */ #include #include /* contains fork prototype */ int main(void) { pid_t pid; printf(\"Hello World! \"); printf(\"I am the parent process, my pid is: %d. \", getpid()); printf(\"Here i am before forking \"); pid = fork(); printf(\"Here I am just after forking \"); /* detect which process */ if (pid == 0) printf(\"I am the child process, my pid is: %d. \", getpid()); else printf(\"I am the parent process, my pid is: %d. \", getpid()); }

PROGRAM 2

* Multiple Forks */ #include #include /* contains fork prototype */ int main(void) { printf(\"Here I am just before first forking statement \"); fork(); printf(\"Here I am just after first forking statement \"); fork(); printf(\"Here I am just after second forking statement \"); printf(\"\\t\\tHello World from process %d! \", getpid()); }

Explain what do these two programs are doing? and comment on the important lines.

Run the above two programs and observe their outputs. Why the second program repeats itself ?