建立一个文本文件，文件名由用户用键盘输入，输入一个不含空格的关键字，统计输出关键字在文本中的出现次数。

本项目的设计要求可以分成两个部分实现：首先建立一个文本文件，文件名由用户用键盘输入；然后输入一个不含空格的关键字，统计输出该单词在文本中的出现次数。-Create a text file, the file name input by the user using the keyboard, enter a keyword with no spaces, statistical output keyword occurrences in the text.

The design requirements of the project can be divided into two parts to achieve: First create a text file, the file name entered by the user using the keyboard　no spaces and then enter a keyword, statistical output of the number of occurrences of the word in the text.