想用字符串链表实现字符串的部分反转：
例如，输入： I have a cat
      输出:  cat a have I

测试发现，各函数功能貌似都没问题（代码里有测试用的main()）。 但在main（）中输入并以空格分割字符串，插入链表时有问题，只有最后一个字符串cat能被插入，输出变成：
cat cat cat cat

希望高手能帮忙看下~

谢啦

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

struct strings
{
    char *word;
    struct strings *next;
};

struct strings *head;

struct strings *insertWords(struct strings *head, char *input)
{
    struct strings *currPtr, *newPtr;

    newPtr = (struct strings*)malloc(sizeof(struct strings));
    
    if (newPtr != NULL)
    {
        currPtr = head;
        
        newPtr->word = input; 
        newPtr->next = NULL;

        if (currPtr == NULL)
        {
            head = newPtr;
            currPtr = head;
            printf("done!\n");
            return head;
            
        }

        while(currPtr->next != NULL)
        {
            currPtr = currPtr->next;
        }

        currPtr->next = newPtr;
    }

    else
    {
        printf("No enough memory!\n");
    }
    //printf("done!\n");
    return head;
}

struct strings* stringReverse(struct strings *head)
{
    struct strings *p, *q, *r;
    
    if(head == NULL)
    {
        return NULL;
    }
    
    p = head;
    q = head->next;
    p->next = NULL;
    

    while(q != NULL)
    {
        r = q->next;
        q->next = p;
        p = q;
        q = r;
    }

    head = p;
    return head;
}

void stringDisp(struct strings *head)
{
    struct strings *p1;
        
    p1 = head;

    while (p1 != NULL)
    {
        printf("%s", p1->word);
    
        printf(" ");
        p1 = p1->next;
    }

    printf("\n");
}

main()
{
    int i;
    char *strings_input = "I have a cat", *strings; 
    char temp[100] ;
        
    head = NULL;

    if(strings_input == NULL)
    {
        printf("String is empty!\n");
        exit(0);
    }

    while (*strings_input != '\0')
    {
    
        for(i = 0; *strings_input != ' '&& *strings_input != '\0'; strings_input++,i++)
        {
            temp[i]=*strings_input;
            
                    
        }
        temp[i] = '\0';

        strings = temp;
        
           if(*strings_input != '\0')
        strings_input++;
        //printf("temp = %s\n",temp);

        head = insertWords(head, strings);
        //stringDisp(head);
                
    }
    
    stringDisp(head);
    system("pause");

}


/*main()
{
    char *test1 = "first", *test2 = "second", *test3 = "third";
    head = NULL;

    head = insertWords(head,test1);
    head = insertWords(head,test2);
    head = insertWords(head,test3);

    stringDisp(head);
    head = stringReverse(head);
    stringDisp(head);
    
    system("pause");


}
*/

谢了！

为啥用字符指针不行呢？我用注释掉的那段main测试没问题，插入翻转都可以，问题在哪里呢？