#include<stdio.h>
#include<stdlib.h>
typedef struct listaelem
{
	int data;
	struct listaelem* next;

}listaelem;

listaelem* push_front(listaelem* head, int d)
{
	listaelem* p = (listaelem*)malloc(sizeof(listaelem));
	p->data = d;
	p->next = head;
	head = p;

	return head;
}

int main()
{
	listaelem* head = NULL;
	head = push_front(head, 2);
	head = push_front(head, 5);

	listaelem* p = head;
	while (p != NULL)
	{
		printf("%d ", p->data);
		p = p->next;
	}

	return 0;
}