//只实现了从头插入和打印链表
#include<stdio.h>
#include<stdlib.h>
typedef struct sqlist
{
    int val;
    struct sqlist* next;
}sqlist;
//创建新节点
sqlist* creatnode(int val)
{
    sqlist* newnode=(sqlist*)malloc(sizeof(sqlist));
    newnode->val=val;
    newnode->next=NULL;
}
void insertsqlist(sqlist** head,int val)
{
    sqlist* newnode=creatnode(val);
    newnode->next=*head;
    *head=newnode;
}
void printsqlist(sqlist* head)
{
    while(head!=NULL)
    {
        printf("%d",head->val);
        head=head->next;
    }
    printf("\n");
}
// sqlist* initsqlist()
// {
//     sqlist* head=(sqlist*) malloc(sizeof(sqlist));
//     head->next=NULL;
//     return head;
// }
int main()
{
    sqlist* head=NULL;
    //sqlist* head = initsqlist();
    insertsqlist(&head,5);
    insertsqlist(&head,6);
    printsqlist(head);
    return 0;
}