来自Primer例子实现！自己实现的一个文本查询程序，可以实现，查找你所找的任意一个单词，或者单词的组合，然后返回给你出现该词的每一句话！这个程序，你可以学习c++的继承，以及句柄类的实现！很不错！代码无误，质量高！-Examples from the Primer to achieve! Their implementation of a text query program, you can achieve, you are looking to find any word or combination of words, and then returned to the emergence of the term of your every word! This program, you can learn c++ inheritance, and the handler class to achieve! Very good! Code is correct, high quality!