stack.c

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

int main()
{
    /* Nodes */
    int dado1 = 7, dado2 = 3, dado3 = 3, dado4 = 1, tmp;

    /* Stack */
    Stack *stack = init();

    push(stack, &dado1);
    tmp = pop(stack);

    push(stack, &dado1);
    push(stack, &dado3);
    tmp = pop(stack);

    push(stack, &dado3);
    push(stack, &dado3);
    push(stack, &dado4);
    push(stack, &dado1);
    tmp = pop(stack);

    echo(stack);

    deInit(stack);

    return 0;
}

Stack *init()
{
    Stack *stack = malloc(sizeof(Stack));

    stack->headNode = NULL;
    stack->size = 0;

    printf("Init Stack \n");
    return stack;
}

void push(Stack *stack, int *pData)
{
    Node *node = malloc(sizeof(Node));

    node->pData = pData;
    node->pNext = stack->headNode;

    stack->headNode = node;
    stack->size += 1;
}

int pop(Stack *stack)
{
    int popNode;
    Node *node = stack->headNode->pNext;

    popNode =  *(stack->headNode->pData);

    free(stack->headNode);

    stack->headNode = node;
    stack->size -= 1;

    return popNode;
}

void echo(Stack *stack)
{
    Node *node;
    printf("Head ->" );
    while(NULL != stack->headNode)
    {
        node = stack->headNode;
        stack->headNode = stack->headNode->pNext;
        printf("\t %d\n", *(node->pData));
    }
}

int getSize(Stack *stack)
{
    printf("%d\n", stack->size);
    return stack->size;
}

void deInit(Stack *stack)
{
    Node *node;

    while(NULL != stack->headNode)
    {
        node = stack->headNode;
        stack->headNode = stack->headNode->pNext;
        free(node);
        node = NULL;
    }

    free(stack);
    stack = NULL;
    printf("DeInit Stack\n");
}