大家帮忙该个错，编译没错，运行的时候出错了（约瑟夫环）

#include<iostream.h>
#include<math.h>
#include<malloc.h>
#include<stdio.h>

typedef struct link{
    int num;
    int cod;
    struct link *next;
}node,*linklist;

int main()
{
linklist link_make(int );
void construct_input_cod(linklist ,int );
void deal_with_link(linklist ,int );

linklist beg;
 int all;
 cout<<"请输入一共有多少人：";
 cin>>all;
 beg=link_make(all);//创建

construct_input_cod(beg,all);//编辑密码

int m;
cout<<"请输入初始密码：";
cin>>m;
deal_with_link(beg, m);//处理
 getchar();

}

linklist link_make(int t)/*创建链表*/
{
    linklist L;
    node *s,*r;
    int m=1;

    if((L=(linklist)malloc(sizeof(node)))==0)
    {
        cout<<"无法分配内存！";
        return 0;
    }
    L->num=m;
    m++;
   
    r=L;
   while(m<=t)
    {
       if((s=(linklist)malloc(sizeof(node)))=0)
       {
          cout<<"无法分配内存！";
        return 0;
       }
        s->num=m;
        r->next=s;
        r=s;
        m++;
    }
   r->next=L;
   return L;
}

void construct_input_cod(linklist L,int t)/*输入密码*/
{
    node *r;
    int s;
    r=L;
    for(int i=1;i<=t;i++)
    {
        cout<<"请输入第"<<i<<"个节点的密码:";
          cin>>s;
          r->cod=s;
          r=r->next;
    }
}

void deal_with_link(linklist L,int m)/*处理链表*/
{
    node *s,*r;
    r=L;
    int q=m;

    while(r->next!=r)
    {
        for(int i=1;i<q;i++)
            r=r->next;
        s=r;
        q=r->cod;
        cout<<r->num<<"号出列；"<<endl;
        r=r->next;
        free(s);
    }
}