C语言实例71：链表的建立

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

struct chain
{
    int value;
    struct chain *next;

};

struct chain *create()
{
    struct chain *head, *tail, *p;
    int x;
    head = tail = NULL;
    printf("Input data.\n");
    while(scanf("%d", &x) == 1)
    {
        p = (struct chain *)malloc (sizeof(struct chain));
        p->value = x;
        p->next = NULL;
        if(head == NULL)
            head = tail = p;
        else
            tail = tail ->next;
        tail ->next = p;

    }
    return head;
};

int main(int argc, char *argv[])
{
    struct chain *p, *q;
    q = create();
    while(q)
    {
        printf("%d\n", q->value);
        p = q->next;
        free(q);
        q = p;
    }
    system("pause");
    return 0;
}