How to count the number of words in English text through C language?

The phenomenon and background of the problem

As the title . If I input an English material text and a key word text . All words in two texts do not include spaces and straddles between words , Letters are not case sensitive . The English material text is a normal English novel paragraph . The key word text is composed of only words , Words are separated by commas .
The program counts the total number of times the words in the key word text appear in the English data text , And sort the words according to the number of occurrences .
Output key words according to the number of occurrences from large to small . The output format doesn't matter . How to design this kind of small program code . I'm an English college student , learn by oneself C Language . Want to design a small program for high-speed review . But I have no idea .

Operation results and error reporting contents

My solution ideas and tried methods

What I want to achieve

Please try to use basic grammar , I am a beginner , Advanced grammar can't be understood very well

Mainly the segmentation and comparison of strings .
（1） First extract the end word , Put it in an array （ If you've learned STL Containers , It can also be used. list perhaps vector Containers ）, And use an array to record the number of key words .
（2） Read English data text （ It can be read line by line , It can also be read at one time , The treatment is similar to ）, Take line by line reading as an example ：
（a） Read a line of text , Deposit in char Array
（b） Traverse char Array , Use spaces , comma , spot , question mark , Exclamation mark split string , Extract all the words in this line .
（c） Take out one word at a time , Judge whether the word is in the key word array , If in , Just put the corresponding number of words +1
（d） Continue reading one line , continue a-c Steps for , Until the file is read .

There is a read file in the following connection , And count the number of words , On the basis of it, add the statistics of key words .

Read the file and count the number of words C Language version _qfl_sdu The blog of -CSDN Blog _c The number of words in the language read file #include <stdio.h>#include <string.h>#include <ctype.h>struct WordNode{char word[30];int nmb;WordNode* next;WordNode(){next = 0;}};class WordCount{public:WordCount(){head = 0;}~WordCount(){WordNode* node = 0;

https://blog.csdn.net/qfl_sdu/article/details/118405603?spm=1001.2014.3001.5502

How to count the number of words in English text through C language?

The phenomenon and background of the problem

Problem related code , Do not paste screenshots

Operation results and error reporting contents

My solution ideas and tried methods

What I want to achieve