#include <stdio.h>
#include <stdlib.h>
#define MAX 51

typedef struct node *link;
typedef struct {
    char codice[6];
    char nome[MAX];
    char cognome[MAX];
    char data[11];
    char via[MAX];
    char citta[MAX];
    int cap;
    link head;
} anagraf_t;
typedef struct node{
    anagraf_t val;
    link next;
};

link InsOrdinato(link h, anagraf_t val);
char KEYget(anagraf_t val);
int KEYgreater(char val, char data);

int main()
{
    anagraf_t *persona;
    FILE*fp=fopen("elenco.txt", "r");
    link x, p, head;
    int i=0;

    x=malloc(sizeof(struct node));
    persona=(anagraf_t*)malloc(sizeof(anagraf_t));
    if(head==NULL) printf("Lista vuota\n");
    p=NULL;

    while(fscanf(fp, "%s%s%s%s%s%s%d", persona->codice,persona[i].nome,
        persona[i].cognome, persona[i].data, persona[i].via, persona[i].citta, &persona[i].cap)!=EOF){
        persona[i].head=InsOrdinato(head, *persona);
    }
    Stampa(x);


    return 0;
}

link newNode(anagraf_t val, link next)
{
    link x=malloc(sizeof*x);
    if(x==NULL) return NULL;
    x->val=val;
    x->next=next;
    return x;
}

link InsOrdinato(link h, anagraf_t val)
{
    link x, p;
    char k[MAX];
    *k=KEYget(val);
    if(h==NULL||KEYgreater(KEYget(h->val),k))
        return newNode(val, h);
    for(x=h->next, p=h; x!=NULL&&KEYgreater(k, KEYget(x->val)); p=x, x=x->next);
    p->next=newNode(val, x);
    return h;
}

char KEYget(anagraf_t val)
{
    return val.nome;
}

int KEYgreater(char val, char data)
{
    if(strcmp(val, data)>0){
        return strcmp(val, data);
    }
    return -1;
}

/*link CancOrdinata(link h, char k)
{
    link x,p;
    if(h==NULL) return NULL;
    for(x=h, p=NULL; x!=NULL&&KEYgeq(k, KEYget(x->val)); p=x, x=x->next){
        if(KEYeq(KEYget(x->val),k)){
            if(x=h) h=x->next;
            else p->next=x->next;
            free(x);
            break;
        }
    }
    return h;
}

link RicOrdinata(link h, char k)
{
    link x;
    for(x=h; x!=NULL&&KEYgeq(k, KEYget(x->val)); x=x->next){
        printf("\n");
        if(KEYeq(KEYget(x->val),k)) return h; //MODIFICARE
    }
    return h; //MODIFICARE
}*/

void Stampa(link x)
{
    if(x==NULL)
    return;

    printf("%s ", x->val);
    Stampa(x->next);
}