利用霍夫曼树进行文件压缩和解压，直接用vc6.0打开工程即可。其中05.ppt是用于测试的文件，05.ppt内容是实验要求。-Huffman tree for the use of file compression and decompression, the direct use of vc6.0 can open the project. 05.ppt which is used to test the document, 05.ppt is experimental requirement