#include <stdio.h>
#include <stdlib.h>
struct yuansu
{
    int data;
    struct yuansu *next;
};
struct yuansu *creat(void)
{
    struct yuansu *head,*p1,*p2;
    head=p1=(struct yuansu*)malloc(sizeof(struct yuansu));
    p2=(struct yuansu*)malloc(sizeof(struct yuansu));
    printf("请输入链表元素(输入-1时结束):\n\t");
    scanf("%d",&p2->data);
    while(p2->data!=-1)
    {
        p1->next=p2;
        p1=p2;
        p2=(struct yuansu*)malloc(sizeof(struct yuansu));
        scanf("%d",&p2->data);
    }
    p1->next=NULL;
    free(p2); 
    return head; 
}
int bianli(struct yuansu *head)
{
    int count=0;
    while(head->next!=NULL)
    {
        count++;
        head=head->next;
    }
    return count;
} 
void print(struct yuansu *head)
{
    head=head->next;
    while(head!=NULL)
    {
        printf("%d ",head->data);
        head=head->next;
    }
}   
int main()
{
	struct yuansu *head1,*head2,*head,*p1,*p2;
    int m,n;
    printf("请输入单链表A:\n");
    head1=creat();
    m=bianli(head1);
    printf("请输入单链表B:\n");
    head2=creat();
    n=bianli(head2);
    if(m>n)                            
    {
        head=p1=(struct yuansu*)malloc(sizeof(struct yuansu));
        while(head2->next!=NULL)
        {
            p2=(struct yuansu*)malloc(sizeof(struct yuansu));
            head2=head2->next;
            p2->data=head2->data;
            p1->next=p2;
            p1=p2;
            p2=(struct yuansu*)malloc(sizeof(struct yuansu));
            head1=head1->next;
            p2->data=head1->data;
            p1->next=p2;
            p1=p2;
        }
        while(head1->next!=NULL)
        {
            p2=(struct yuansu*)malloc(sizeof(struct yuansu));
            head1=head1->next;
            p2->data=head1->data;
            p1->next=p2;
            p1=p2;
        }
    }
    else
    {
        head=p1=(struct yuansu*)malloc(sizeof(struct yuansu));
        while(head1->next!=NULL)
        {
            p2=(struct yuansu*)malloc(sizeof(struct yuansu));
            head1=head1->next;
            p2->data=head1->data;
            p1->next=p2;
            p1=p2;
            p2=(struct yuansu*)malloc(sizeof(struct yuansu));
            head2=head2->next;
            p2->data=head2->data;
            p1->next=p2;
            p1=p2;
        }
        while(head2->next!=NULL)
        {
            p2=(struct yuansu*)malloc(sizeof(struct yuansu));
            p2->data=head2->data;
            p1->next=p2;
            p1=p2;
        }
        p1->next=NULL;
        free(p2);
        free(head1);
        free(head2);
    }
    printf("线性单链表C的元素为:\n\t");
    print(head);
	system("pause");
	return 0;
}
当输入少量数据时会出现死循环，当输入大量数据时会显示正确的结果但还会出现运行停止的对话框。
求大神解决