LZW算法的C语言实现，最多可扩展到15位-This is the LZW module which implements a more powerful version of the algorithm.　This version of the program has three major improvements over LZW12.C.　First, it expands the maximum code size to 15 bits.　Second, it starts encoding with 9 bit codes, workingits way up in bit size only as necessary.　Finally, it flushes thedictionary when done.