程序代码：

#include <stdio.h>
#include<stdlib.h>
struct Node
{
    char name[32];
    Node * next;
};
void printz(Node * pHead)
{
    while (pHead)
    {
        printf("%s ", pHead->name);
        pHead = pHead->next;
    }
}
Node * DelLast(Node * pHead)
{
    Node * pTemp = pHead;
    if (pHead->next == NULL)
    {
        printf("只剩下一个头节点:%s\n", pTemp->name);
        free(pTemp);
        return NULL;
    }
    else
    {
        while (pTemp->next->next == NULL)
        {
            pTemp = pTemp->next;
        }
        printf("找到倒数第二个节点: %s\n", pTemp->name);
        free(pTemp->next);
        pTemp->next = NULL;
        return pTemp;
    }
}
int main()
{
    Node student[5] = {
        {"abc",&student[1]},
        {"bcd",&student[2]},
        {"cde",&student[3]},
        {"def",&student[4]},
        {"efg",NULL}
    };

    printz(student);
    
    student = DelLast(student);
    getchar();
    return 0;
}