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

typedef struct _strList {
    char *str;
    struct _strList *next;
} strList;

typedef struct _List {
    strList *begin;
    strList *end;
} List;

strList *list_insert(List *lst, char *s) {
    strList *new_cell = (strList*) malloc(sizeof(strList));
    new_cell->str = strdup(s);
    new_cell->next = lst->begin;

    lst->begin = new_cell;
    if(list->end == NULL)
        lst->end = new_cell;

    return lst;
}

strList *list_append(strList *lst, char *s) {
    strList *new_cell = (strList*) malloc(sizeof(strList));
    new_cell->str = strdup(s);
    new_cell->next = NULL;

    if (lst) {
        strList *aux;
        for ( aux = lst ; aux->next ; aux = aux->next ) {}
        aux->next = new_cell;
    } else {
        lst = new_cell;
    }
    return lst;
}

void show_list(List *lst) {
    strList *aux = lst->begin;

    for( ; aux ; aux = aux->next){
        printf("%s\n", aux->str);
    }
}

int main() {
    List *lst = (List*) malloc(sizeof(List));
    lst->begin = lst->end = NULL;

    lst = list_insert(lst, "Ola");
    lst = list_insert(lst, "Bah");
}