简易计算器，支持多数多符号运算，里面有消息报告解说，是一位师兄提供的-Simple calculator, support more than most symbols operations, there are news report explain, is a senior provide

./bin/exe c 源文件 目标文件 --表示压缩 ./bin/exe d 压缩后文件 解压后文件 --表示解压缩 利用huffman原理与位运算完成的压缩解压缩-/ bin/exe c source file target file- compression. d compression extract file- that using huffman principle and bit computing to complete the compression and decompr