如何在c中编写一个函数char*来返回按长度排序的单词？

typedef struct {
    char* word;
    int length;
} Word;

int compare(const void* a, const void* b) {
    const Word* wordA = (const Word*)a;
    const Word* wordB = (const Word*)b;
    
    return strlen(wordA->word) - strlen(wordB->word);
}

void sortWords(char** words, int numWords) {
    Word* wordArray = malloc(numWords * sizeof(Word));
    
    for (int i = 0; i < numWords; i++) {
        wordArray[i].word = words[i];
        wordArray[i].length = strlen(words[i]);
    }
    
    qsort(wordArray, numWords, sizeof(Word), compare);
    
    for (int i = 0; i < numWords; i++) {
        words[i] = wordArray[i].word;
    }
    
    free(wordArray);
}

char** getSortedWords(char** words, int numWords) {
    sortWords(words, numWords);
    return words;
}