#include <stdio.h>
#include <malloc.h>
typedef struct typenode *typeptr;
typedef struct typenode{ int info;
typeptr next; };
int main()
{ int a=10;
typeptr p,q,r;
p=(typenode *) malloc(sizeof(typenode));
q=(typenode *) malloc(sizeof(typenode));
r=(typenode *) malloc(sizeof(typenode));
p->info=a; r->next=p; p=q; q->info=20;
p->info=3 * r->next->info;

printf("p->next->next->info = %d\n",p->next->next->info);
printf("q->next->info = %d\n",q->next->info);
printf("r->info = %d\n\n",r->info);
printf("p->next->info = %d\n\n",p->next->info);
printf("q->next->info = %d\n\n",q->next->info);
printf("r->next->info = %d\n\n",r->next->info);

printf("a = %d\n",a);
printf("p->info = %d\n",p->info);
printf("q->info = %d\n",q->info);
printf("r->info = %d\n",r->info);
}