Kolokwium_03

/*
Wczytać od użytkownika 5 małych liter i umieścić je na stosie. Wyświetlić zawartość stosu
*/

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

struct stack_node{
    char letter;
    struct stack_node *next;
} *top;

char push(struct stack_node *top, char letter)
{
    struct stack_node *new_node = (struct stack_node*)malloc(sizeof(struct stack_node));
    if(new_node){
        new_node->letter = letter;
        new_node->next = top;
        top = new_node;
        return letter;
    }
    return '-';
}

void enter_numbers()
{
    char a, b, c, d, e;
    printf("Dodaj 5 liter: ");
    scanf("%c %c %c %c %c", &a, &b, &c, &d, &e);
    puts("Stack:");
    printf("%c\n", push(top, e));
    printf("%c\n", push(top, d));
    printf("%c\n", push(top, c));
    printf("%c\n", push(top, b));
    printf("%c\n", push(top, a));
}

int main(void)
{
    enter_numbers();
    return 0;
}