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

typedef struct stack_struct {
    int data;
    struct stack_struct *next;
} stack_s;

void push(stack_s **head, int data) {
    stack_s *tmp = malloc(sizeof(stack_s));
    //printf("%d \n", head);
    tmp->next = *head;
    tmp->data = data;
    *head = tmp;
    //printf("%d \n", head);
}

int pop(stack_s **head) {
    stack_s *last;
        int data;
        if (*head == NULL) return 1;
    last = *head;
    *head = (*head)->next;
    data = last->data;
    free(last);
    return data;
}

void printStack(stack_s *head) {
    printf("stack >");
    while (head) {
        printf("%d ", head->data);
        head = head->next;
    }
}

int main(){
    stack_s *head = NULL;
    stack_s *tmp;
    for (int i = 0; i < 300; i++) push(&head, i);
    printStack(head);
}