Adam_działczy

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

struct stack_s
{
    int number;
    struct stack_s *next;
};


void push ( int element, struct stack_s **top )
{
    struct stack_s *p;

    p = *top;
    *top = (struct stack_s *)malloc ( sizeof ( struct stack_s ) );
    (*top)->number = element;
    (*top)->next = p;
}

int pop ( struct stack_s **top )
{
    int element = 0;
    struct stack_s *p;

    if (*top != NULL)
    {
        p = *top;
        element = (*top)->number;
        *top = (*top)->next;
        free ( p );
    }
    return element;
}

int main ( ) {

    struct stack_s *top = NULL;

    push ( 1, &top );
    push ( 2, &top );
    push ( 3, &top );

    int a = pop ( &top );
    int b = pop ( &top );
    int c = pop ( &top );

    printf ( "%d,%d,%d\n", c, b, a );





    return 0;
}