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

struct base
{
    char znak;
    struct base *next;
};

struct base *add_stack(struct base *stos, char znak)
{
    struct base *nowy = (struct base*)
        malloc(sizeof(struct base));

    if(nowy!=NULL)
    {
        nowy->znak = znak;
        nowy->next = stos;
        stos = nowy;
    }
    return stos;
}

void delete_stack(struct base **stos)
{
    struct base *tmp;
    while(*stos)
    {
        tmp = (*stos)->next;
        printf("%c\t", (*stos)->znak);
        free(*stos);
        (*stos) = tmp;
    }
}

int main()
{
    char znak;
    struct base *stos = NULL;
    int i = 0;
    for(i; i < 5; i++)
    {
        printf("Podaj znak: ");
        scanf("%c", &znak);
        while(getchar()!='\n');
        stos = add_stack(stos, znak);
    }
    delete_stack(&stos);
    return 0;
}