循环列示例（约瑟夫环问题）

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

typedef  struct  node *  link;
struct  node{ int  item; link next;};

int  main()
{  
    int  i,N,M;
   scanf( " %d%d " , & N, & M);
   link t = malloc( sizeof   * t),x = t;
   t -> item = 1 ;t -> next = t;
    for (i = 2 ; i <= N; i ++ ){
         x = (x -> next = malloc( sizeof   * x));
         x -> item = i; x -> next = t;
       }
       
       while (x != x -> next){
            for (i = 1 ; i < M; i ++ ) x = x -> next;
           x -> next = x -> next -> next;N -- ;
          
          }
          printf( " %d\n " ,x -> item);
       return   0 ;
}