#include<stdio.h>
#include<stdlid.h>
int main()
struct Node
{
    int a,
    int b,
    Node *n1,*n2,*n3;
    n1=(Node*)malloc(sizeof(Node));
    n1->a=1;
    n1->b=15;
    n1->c=3
    n1->ptr=NULL;
    head=n1;
    node*n2=malloc(sizeof(node));
    n2->a=15;
    n2->b=B;
    n2->ptr=NULL;
    node*n3=malloc(sizeof(node));
    n3->a=3;
    n3->b=C;
    n3->ptr=NULL;
    n2->ptr=n3;
    node*temp=head;
    while(temp!=NULL)
    {

    }

}