问题描述：
C语言:统计一篇英文文章中所要查询单词出现的次数以及出现的位置
【问题描述】统计一篇英文文章中所要查询单词出现的次数以及出现的位置.
【基本要求】
（1） 要进行统计的英文文章为一个已经存在文件中的内容；
（2） 要查询单词运行时进行输入；
（3） 不区分大小写,如The与the看成一个单词；
【测试数据】举例：
Recently,there has been a discussion regarding the issue of knowledge in the newspaper.As can be seen from the picture,knowledge is symbolized a clenched fist as power,the fist sends out a message for "obedience",threatening to crack with power any hard nut.The more demanding and challenging a task is,the more powerful the fist seems to grow.Similarly,knowledge,the strongest power for human beings,feeds up the field of science and technology.The more advanced and developed a field is,the more profound knowledge seems to become.
该文章中单词the出现的次数为11,第一个 the出现的位置为：48,也既前面出现的字符个数.
求完整的程序,急,
【问题描述】统计一篇英文文章中所要查询单词出现的次数以及出现的位置.
【基本要求】
（1） 要进行统计的英文文章为一个已经存在文件中的内容；
（2） 要查询单词运行时进行输入；
（3） 不区分大小写,如The与the看成一个单词；
【测试数据】举例：
Recently,there has been a discussion regarding the issue of knowledge in the newspaper.As can be seen from the picture,knowledge is symbolized a clenched fist as power,the fist sends out a message for "obedience",threatening to crack with power any hard nut.The more demanding and challenging a task is,the more powerful the fist seems to grow.Similarly,knowledge,the strongest power for human beings,feeds up the field of science and technology.The more advanced and developed a field is,the more profound knowledge seems to become.
该文章中单词the出现的次数为11,第一个 the出现的位置为：48,也既前面出现的字符个数.
求完整的程序,急,
问题解答：
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