LZW Compression in c++

Implemented LZW Compression Algorithm in C++. Takes input from stream and writes coded output in text mode. Instructions to run:

1. Compile using the following command g++ lzw.cpp -o lzw -O3
2. Usage:
   1. lzw [-max max_code] -c input output #compress file input to file output
   2. lzw [-max max_code] -c - output #compress stdin to file otuput
   3. lzw [-max max_code] -c input #compress file input to stdout
   4. lzw [-max max_code] -c #compress stdin to stdout
   5. lzw [-max max_code] -d input output #decompress file input to file output
   6. lzw [-max max_code] -d - output #decompress stdin to file otuput
   7. lzw [-max max_code] -d input #decompress file input to stdout
   8. lzw [-max max_code] -d #decompress stdin to stdout
      
      max_code denotes the maximum size of the dictionary used for compression and is by default set to 32767.

Check this link for deatiled explanation on working of the algorithm.