#include<stdio.h>
#include<stdlib.h>
typedef struct node_def{
                        int data;
                        struct node *link;
                       }node;
typedef node *list;
void main()
{
 list head,tail;
 head=tail=NULL;
 int n;
 char ch;
 printf("entr the data\n");
 scanf("%c",&ch);
 fflush(stdin);
 while(ch=='y')
 {
  printf("entr rhe list\n");
  scanf("%d",&n);
  fflush(stdin);
  tail->link=(list)malloc(sizeof(node));
  tail->link->data=n;
  tail->link->link=NULL;
  tail=tail->link;

  printf("rt\n");
  scanf("%c",&ch);
  fflush(stdin);                  

 }
 head=tail;
 while(tail!=NULL){
  printf("%d",tail->data);
  tail=tail->link;
 }
}