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

typedef struct node
{
    int info;
    struct node *next;
}lista;

lista *p, *q, *prim = NULL;

void add(int i)
{
    p = (lista*)malloc(sizeof(lista));

    p->info = i;
    p->next = NULL;

    if(prim == NULL)
        prim = p;
    else
        q->next = p;
    q = p;
}

void show()
{
    for(p = prim; p != NULL; p = p->next)
        printf("%d\n", p->info);
}

void remover(int i)
{
    for (p = prim; p != NULL; p = p->next)
    {
        if (p->info == i)
        {
            if(p == prim)
                prim = prim->next;
            else
                q->next = p->next;
            free(p);
            break;
        }
        q = p;
    }
}

int main(void)
{
    int i, num;

    for(i = 1; i <= 3; i++)
        add(i);
    show();

    printf ("Informa o valor a ser apagado (1,2,3): ");
    scanf("%d",&num);
    remover(num);

    show();
}