Fix how data_size extracts size data from status.
Instead of using the status.size directly, it needs to go through MPI_Get_count().
Add prototype of Slave_Loop().
Each slave process will run Slave_Loop() to loop through its values. The prototype is now written. Also, as a word choice fix, all instances of the word "problem" in the comments with "exercise".
Add Slave_Loop() description.
Add Master_Get_Instructions().
Add a function for the master to get instructions. Also, modify Slave_Get_Instructions() to output a status.