用c语言从文件中读入任意一篇英文文件到链表

好的，我可以帮你解决这个问题。下面是一个简单的代码示例，它可以从文件中读取英文文本，并将每个单词存储到链表中。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#define MAX_WORD_SIZE 50

typedef struct node {
    char word[MAX_WORD_SIZE];
    int count;
    struct node *next;
} Node;

Node *createNode(char *word) {
    Node *newNode = (Node *) malloc(sizeof(Node));
    if (newNode == NULL) {
        printf("Error: Unable to allocate memory for new node.\n");
        exit(1);
    }
    strncpy(newNode->word, word, MAX_WORD_SIZE);
    newNode->count = 1;
    newNode->next = NULL;
    return newNode;
}

void insertNode(Node **head, char *word) {
    Node *current = *head;
    Node *previous = NULL;
    while (current != NULL && strcmp(word, current->word) > 0) {
        previous = current;
        current = current->next;
    }
    if (current != NULL && strcmp(word, current->word) == 0) {
        current->count++;
        return;
    }
    Node *newNode = createNode(word);
    if (previous == NULL) {
        newNode->next = *head;
        *head = newNode;
    } else {
        newNode->next = current;
        previous->next = newNode;
    }
}

void printList(Node *head) {
    while (head != NULL) {
        printf("%s: %d\n", head->word, head->count);
        head = head->next;
    }
}

void destroyList(Node *head) {
    Node *current = head;
    while (current != NULL) {
        Node *temp = current;
        current = current->next;
        free(temp);
    }
}

int main(int argc, char *argv[]) {
    if (argc < 2) {
        printf("Error: Must specify input file.\n");
        return 1;
    }
    char *filename = argv[1];
    FILE *file = fopen(filename, "r");
    if (file == NULL) {
        printf("Error: Unable to open input file.\n");
        return 1;
    }
    Node *head = NULL;
    char word[MAX_WORD_SIZE];
    int i = 0;
    int c;
    while ((c = fgetc(file)) != EOF) {
        if (isalpha(c)) {
            word[i++] = tolower(c);
        } else if (i > 0) {
            word[i] = '\0';
            insertNode(&head, word);
            i = 0;
        }
    }
    if (i > 0) {
        word[i] = '\0';
        insertNode(&head, word);
    }
    fclose(file);
    printList(head);
    destroyList(head);
    return 0;
}

这个代码示例使用 createNode 函数来创建新节点，insertNode 函数将新节点插入链表中，并按字母顺序排列。printList 函数打印链表中的每个单词及其出现次数，destroyList 函数释放链表内存。