C++ Prepared a simple text editor, you can read a text file time preservation of...

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C++编写的简单文本编辑器，可以时间文本文件的读取保存编辑功能，并且具有撤销，复制剪切粘贴的功能-C++ Prepared a simple text editor, you can read a text file time preservation of editing features, and has withdrawn, copy and paste function of shear