用C语言编写的一个编译器小程序 可以读出输入的字符串并把他按照字母，符号，数字等分类，希望给初学编译原理的网友有帮助。-Using C language compiler of a small program can read out the input string and put him in accordance with the letters, symbols, numbers, etc., hoping to novice users to compile the princip