如何在C中对文本文件中的记录进行排序？

FILE *file = fopen("filename.txt", "r");
if (file == NULL) {
    printf("Failed to open the file.\n");
    return;
}

#define MAX_SIZE 100

char records[MAX_SIZE][MAX_SIZE];  // 假设每条记录的最大长度为MAX_SIZE

int count = 0;  // 记录的数量

char line[MAX_SIZE];
while (fgets(line, sizeof(line), file) != NULL) {
    strcpy(records[count], line);
    count++;
}

int i, j;
char temp[MAX_SIZE];

for (i = 0; i < count - 1; i++) {
    for (j = 0; j < count - i - 1; j++) {
        if (strcmp(records[j], records[j + 1]) > 0) {
            strcpy(temp, records[j]);
            strcpy(records[j], records[j + 1]);
            strcpy(records[j + 1], temp);
        }
    }
}

FILE *sortedFile = fopen("sorted_filename.txt", "w");
if (sortedFile == NULL) {
    printf("Failed to create the sorted file.\n");
    return;
}

for (i = 0; i < count; i++) {
    fprintf(sortedFile, "%s", records[i]);
}

fclose(sortedFile);

fclose(file);