Our program Prodcomm is multi threaded program that takes input strings, converts white space to asteriks, 
changes the lowercase characters to uppercase and prints it out to stdout.
We have made the program multi threaded by creating 4 threads, where each thread does one task. 
The reader thread reads the from stdin, the munch thread converts the spaces in input to asteriks.
Munch 2 thread converts the resulting line to all uppercase characters. Finally, the writer thread 
prints out the final line to stdout. 


For simplicity, we have implmented synchronization using monitors instead of semaphores.
We do this by declaring the lock (mutex)and the condition variables(full,empty) in our queue data
structure. We initialized them in our createStringQueue() function.

We have taken care of modularity by seperating our code in 4 different files.Reader.c file
contains the function for the reader thread that takes input from stdin. Munch1.c has the function
for converting the white space to asteriks. Munch2.c has function that converts all lowercase 
characters to uppercase. Finally, writer.c writes the line to stdout.The size of our buffer and 
queue are defined as constants in our constants.h file