In C programming language.

Problem 1 (Building a given Process Tree) 10 points) In this exercise you are asked to write a program which generates the following process tree (Scheme 1) Scheme 1: A given process tree The processes that you generate must remain active for some considerable window of time in order for the user to be able to observe the tree. The leaf process executes a call to: sleep() The internal process awaits of the termination of all its children processes. Every process printsa corresponding message every time it transitions to another phase (for example: start, loop to wait for children termination, allowing its own termination), so that the validation of the correct program operation is feasible. In order to separate the processes, please make sure that every process terminates with a different return code. In this example, one scenario can be At this point, you may find helpful a number of auxiliary functions for process handling, such as those that 1) have to do with identifying the circumstances under which a child process terminated (included in your ppt slides) 2) display the process tree starting from the root process (included in the appendix) 3) are related with different ways of recursively traversing a tree once the whole process tree is generated, etc