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楼主 |
发表于 2014-12-7 23:16:50
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小甲鱼老师的没错 我弄错了 上面那个 do 是打错了 我重新发下
但是为什么那里有; 没有; 就会报错呢
- #include <stdio.h>
- #include <stdlib.h>
- /*链表存储结构的定义*/
- typedef struct CLinkList
- {
- int data;
- struct CLinkList *next;
- }node;
- /************************************************************************/
- /* 操作 */
- /************************************************************************/
- /*初始化循环链表*/
- void ds_init(node **pNode)
- {
- int item;
- node *temp;
- node *target;
- printf("输入结点的值,输入0完成初始化\n");
- while(1)
- {
- scanf("%d", &item);
- fflush(stdin);
- if(item == 0)
- return;
- if((*pNode) == NULL)
- { /*循环链表中只有一个结点*/
- *pNode = (node*)malloc(sizeof(struct CLinkList));
- if(!(*pNode))
- exit(0);
- (*pNode)->data = item;
- (*pNode)->next = *pNode;
- }
- else
- {
- /*找到next指向第一个结点的结点*/
- for(target = (*pNode); target->next != (*pNode); target = target->next)
- ;
- /*生成一个新的结点*/
- temp = (node *)malloc(sizeof(struct CLinkList));
- if(!temp)
- exit(0);
- temp->data = item;
- temp->next = *pNode;
- target->next = temp;
- }
- }
- }
- /*插入结点*/
- /*参数:链表的第一个结点,插入的位置*/
- void ds_insert(node **pNode , int i)
- {
- node *temp;
- node *target;
- node *p;
- int item;
- int j = 1;
- printf("输入要插入结点的值:");
- scanf("%d", &item);
- if(i == 1)
- { //新插入的结点作为第一个结点
- temp = (node *)malloc(sizeof(struct CLinkList));
- if(!temp)
- exit(0);
- temp ->data = item;
- /*寻找到最后一个结点*/
- for(target = (*pNode); target->next != (*pNode); target = target->next)
- ;
- temp->next = (*pNode);
- target->next = temp;
- *pNode = temp;
- }
- else
- {
- target = *pNode;
- for( ; j < (i-1); ++j )
- {
- target=target->next;
- }
- temp = (node *)malloc(sizeof(struct CLinkList));
- if(!temp)
- exit(0);
- temp ->data = item;
- p = target->next;
- target->next = temp;
- temp->next = p;
- }
- }
- /*删除结点*/
- void ds_delete(node **pNode, int i)
- {
- node *target;
- node *temp;
- int j = 1;
- if(i == 1)
- { //删除的是第一个结点
- /*找到最后一个结点*/
- for(target = *pNode; target->next != *pNode;target = target->next)
- ;
- temp = *pNode;
- *pNode = (*pNode)->next;
- target->next = *pNode;
- free(temp);
- }
- else
- {
- target = *pNode;
- for( ; j < i-1; ++j )
- {
- target = target->next;
- }
- temp = target->next;
- target->next = temp->next;
- free(temp);
- }
- }
- /*返回结点所在位置*/
- int ds_search(node *pNode, int elem)
- {
- node *target;
- int i = 1;
- for(target = pNode; target->data != elem && target->next != pNode; ++i)
- {
- target = target->next;
- }
- if(target->next == pNode) /*表中不存在该元素*/
- return 0;
- else
- return i;
- }
- /*遍历*/
- void ds_traverse(node *pNode)
- {
- node *temp;
- temp = pNode;
- printf("***********链表中的元素******************\n");
- do
- {
- printf("%4d ", temp->data);
- }while((temp = temp->next) != pNode);
- printf("\n");
- }
- int main()
- {
- node *pHead = NULL;
- char opp;
- int find;
- printf("------------------- 广 告 位 招 租 --------------------\n\n");
- printf("欢迎来到鱼C论坛和大家一起交流互助:http://bbs.fishc.com\n\n");
- printf("喜欢鱼C就加入成为终身VIP会员吧:http://fishc.taobao.com\n\n");
- printf("-------------------------------------------------------\n\n");
- printf("1.初始化链表 \n\n2.插入结点 \n\n3.删除结点 \n\n4.返回结点位置 \n\n5.遍历链表 \n\n0.退出 \n\n请选择你的操作:");
- while(opp != '0')
- {
- scanf("%c", &opp);
- switch(opp)
- {
- case '1':
- ds_init(&pHead);
- printf("\n");
- ds_traverse(pHead);
- break;
- case '2':
- printf("输入需要插入结点的位置?");
- scanf("%d", &find);
- ds_insert(&pHead, find);
- printf("在位置%d插入值后:\n", find);
- ds_traverse(pHead);
- printf("\n");
- break;
- case '3':
- printf("输入需要删除的结点位置?");
- scanf("%d", &find);
- ds_delete(&pHead, find);
- printf("删除第%d个结点后:\n", find);
- ds_traverse(pHead);
- printf("\n");
- break;
- case '4':
- printf("你要查找倒数第几个结点的值?");
- scanf("%d", &find);
- printf("元素%d所在位置:%d\n", find, ds_search(pHead, find));
- //ListTraverse(L);
- printf("\n");
- break;
- case '5':
- ds_traverse(pHead);
- printf("\n");
- break;
- case '0':
- exit(0);
- }
- }
- return 0;
- }
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