#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct node {
	double key;
	char *val;
	struct node *next;
};

double access(double x, struct node *p);
void insert(double d, char *b, struct node **p);
void print(struct node *p);

int main() {

	struct node *ptr = NULL;

	insert(2.5, "Tomek", &ptr);

	print(ptr);

	getchar();
	return 0;

}

void insert(double d, char *b, struct node **p) {

	struct node *ntr = (struct node *)malloc(sizeof(struct node));
	ntr->val = (char *)malloc(strlen(b)+1);
	ntr->key = d;
	strcpy(ntr->val, b);

	ntr->next = *p;
	*p = ntr;	

}

void print(struct node *p) {

	if (p == NULL)
		return;

	printf("%d %s \n", p->key, p->val);
	p = p->next;

}

double access(double x, struct node **p) {

	struct node *ntr = (struct node *)malloc(sizeof(struct node));

	while(*p) {

		if ((*p)->key == x)
			return x;
		else {
			ntr->key = 0;
			ntr->next = *p;
			*p = ntr;
		}

		*p = (*p)->next;

	}

	return 0;

}