链表(c语言实现)--------------小练习

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

 #define MAX_SIZE    100
 #define MIN_SIZE    32

 struct role
 {
     int number;
     char name[MAX_SIZE];
     char sex[MIN_SIZE];
     int age;
     struct role *next;
 };

 struct role *creat()
 {
     struct role *p = NULL;
     struct role *head = NULL;
     struct role *tail = NULL;

     p = (struct role *)malloc(sizeof(struct role));
     printf(" 请输入编号,按0即退出\n");
     printf("编号->");
     scanf("%d", &(p->number));

     )
         return head;

     )
     {
         printf("姓名->");
         scanf("%s", p->name);
         printf("性别->");
         scanf("%s", p->sex);
         printf("年龄->");
         scanf("%d", &(p->age));

         if (head == NULL)
         {
             head = p;
             tail = p;
         }
         else
         {
             tail->next = p;
             tail = p;
         }

     p = (struct role *)malloc(sizeof(struct role));
     printf("请输入编号,按0即退出\n");
     printf("编号->");
     scanf("%d", &(p->number));
     }
     tail->next = NULL;
     free(p);
     return head;
 }

 void display(struct role *head)
 {
     struct role *p = head;
     printf("编号        姓名        性别        年龄\n");
     while (p != NULL)
     {

         printf("%-16d%-16s%-16s%-16d\n",
             p->number, p->name, p->sex, p->age);
         p = p->next;
     }
 }

 int main(void)
 {
     struct role *head = creat();
     display(head);
     ;
 }

需要改进的还很多.

这仅仅是练习~~~~

数据结构,我来了.加油!!!

小小的修改下...(其实就是free几下...咳咳..新人,,见笑了...)

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

 #define MAX_SIZE    50
 #define MIN_SIZE    32

 struct role
 {
     int number;
     char name[MAX_SIZE];
     char sex[MIN_SIZE];
     char address[MAX_SIZE];
     int age;
     struct role *next;
 };

 struct role *creat()
 {
     struct role *head = NULL;
     struct role *p = NULL;
     struct role *tail = NULL;

     p = (struct role *)malloc(sizeof(struct role));
     printf("请输入编号,按0退出\n");
     printf("编号->");
     scanf("%d", &(p->number));

      == p->number)
     {
         free(p);
         ;
     }

      != p->number)
     {
         printf("姓名->");
         scanf("%s", p->name);

         printf("性别->");
         scanf("%s", p->sex);

         printf("地址->");
         scanf("%s", p->address);

         printf("年龄->");
         scanf("%d", &(p->age));

         if (NULL == head)
         {
             head = p;
             tail = p;
         }
         else
         {
             tail->next = p;
             tail = p;
         }
         p = (struct role *)malloc(sizeof(struct role));
         printf("请输入编号,按0退出\n");
         printf("编号->");
         scanf("%d", &(p->number));
     }
     tail->next = NULL;
     free(p);
     return head;
 }

 void display(struct role *head)
 {
     struct role *p = NULL;
     p = head;

     printf("编号        姓名        性别        住址        年龄\n");
     while (NULL != p)
     {
         printf("%-16d%-16s%-16s%-16s%-16d",
             p->number, p->name, p->sex, p->address, p->age);
         p = p->next;
     }
 }

 int main(void)
 {
     struct role *head = NULL;
     head = creat();
     display(head);
     ;
 }

最后.因为是练习,所以也没想用多文件...呼..不过这样看起来确实很乱...O.O