pilha

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

struct no {
    int valor;
    struct no *prox;
};

struct no *base=NULL;

void push(int x){
    if(base ==  NULL){
        base = (struct no *) malloc(sizeof(struct no*));
        base->valor = x;
        return;
    }
    struct no *aux = base;
    while(aux->prox != NULL){
        aux = aux->prox;
    }
    struct no *novo = (struct no *) malloc(sizeof(struct no*));
    aux->prox = novo;
    novo->valor = x;
    printf("%d\n",base->valor);
}

void mostrar(){
    if(base == NULL)    return;
    while(base != NULL){
        printf("%d\n", base->valor);
        base = base->prox;
    }
}

void pop(){
    if(base == NULL)    return;
    if(base->prox == NULL){
        free(base);
        base = NULL;
    }
    struct no *aux = base;
    struct no *ant;
    while(aux->prox != NULL){
        ant = aux;
        aux = aux->prox;
    }
    free(aux);
    ant->prox = NULL;
    return;
}


int main(){
    push(8);
    push(9);
    push(10);

    //mostrar();
    return 0;
}