创建一个链表实例

<span style="font-family:KaiTi_GB2312;font-size:18px;">#include <stdio.h>
#include <stdlib.h>             /* 提供malloc（）原型 */
#include <string.h>             //提供strcpy原型

#define TSIZE  45
struct film
{
    char title[TSIZE];
    int rating;
    struct film * next;             //指向链表的下一个结构
};

int main(void)
{
    struct film * head = NULL;
    struct film * prev, * current;
    char input[TSIZE];

//收集并存储信息
    puts("Enter first movie title:");
    while(gets(input) != NULL && input[0] != '')
    {
        current = (struct film *)malloc(sizeof(struct film));
        if(head == NULL)
        head = current;
        else
        prev->next = current;

        strcpy(current->title,input);
        puts("enter your rating<0-10>:");
        scanf("%d",¤t->rating);

        while(getchar()!='
')
            continue;
        puts("Enter next movie title(empty line to stop):");
        prev = current;
    }

    if(head == NULL)
    {
        printf("no data entered!");
    }
    else
    printf("Here is the movie list:
");

    current = head;

    while(current != NULL)
    {
         printf("Movie :%s Rating : %d
",current->title,current->rating);
        current = current->next;
    }

    printf("Bye!!
");

    return 0;


}
</span>

<span style="font-family:KaiTi_GB2312;font-size:18px;">
</span>

创建链表包含三个步骤：

1、使用malloc（）函数为一个结构分配足够的空间

2、存储这个结构的地址

3、把正确的信息拷贝到这个结构中