#include<stdio.h>
#include<stdlib.h>
struct node
{
    int id;
    double id1;
    struct node *next;
}*start=NULL,*current;
void create(int a,double b)
{
    int n,i;
    struct node *new_node;
    new_node=(struct node*)malloc(sizeof(struct node));
    new_node->next=NULL;
        if(start==NULL)
        {
            new_node->id=a;
            new_node->id1=b;
            start=new_node;
            current=new_node;
        }
        else
        {
            new_node->id=a;
            new_node->id1=b;
            current->next=new_node;
            current=new_node;
        }
    }

void display()
{
    struct node *c;
    c=start;
    while(c!=NULL)
    {
        printf(" {%d , %.2lf } ",c->id,c->id1);
        c=c->next;
    }
    printf("NULL\n");
}

int main()
{
    create(3,2.7);
    create(5,3.7);
    create(7,2.9);
    display();


}