Process exited with value 3221225477 - c++

Question

I created a program that use a dynamic array. It works, when i use my insert function and then i show the elements of the arrays, it show me all what i want. The problem is that at the end of the program it doesn't return with value 0, but it is blocked for a few second and say "Process exited with value 3221225477". What is wrong?
header:
#ifndef VETTORE_H
#define VETTORE_H
#include "regalo.h"
typedef regalo T;
class vettore {
friend ostream& operator<<(ostream&,const vettore&);
friend istream& operator>>(istream&,vettore&);
private:
T *v;
int riemp;
int max;
public:
vettore();
vettore(const int);
~vettore(){delete [] v;};
bool full(){return riemp==max;};
bool empty()const;
bool inserisci(const T&);
T& operator[](const int index);
};
#endif
cpp file:
#include "vettore.h"
ostream &operator<<(ostream& out,const vettore & v1){
for(int i=0;i<v1.riemp;i++){
out<<v1.v[i];
}
return out;
}
istream &operator>>(istream& in,vettore &v1){
for(int i=0;i<v1.riemp;i++){
in>>v1.v[i];
}
return in;
}
vettore::vettore(){
riemp=0;
max=10;
v=new T[max];
}
vettore::vettore(const int n):max(n),riemp(0){
v=new T[max];
}
bool vettore::empty()const{
if(riemp==0){
return true;
}else return false;
}
bool vettore::inserisci(const T& n){
if(max==0){
cout<<"Inserisci il massimo di elementi del vettore: ";
cin>>max;
}
if(!full()){
v[riemp]=n;
riemp++;
return true;
}else return false;
}
T& vettore::operator[](const int index){
return v[index];
}
main file:
#include "vettore.h"
int main(int argc, char** argv) {
int riempimento;
vettore vett(1);
regalo r1("Alex",300,"quadrato");
vett.inserisci(r1);
cout<<"Gli elementi del vettore sono: \n";
for(int i=0;i<riempimento;i++){
cout<<vett[i]<<endl;
}
system("PAUSE");
return 0;
}

Answer 1

There are a few issues in your code:
riempimento is not initialised so the for loop in main will perform an unknown number of iterations, likely more than the size of your vector. It would be better to expose the value of riemp from inside the vector and use that in the loop instead.
You need to implement the rule of three, this isn't causing you a problem yet but will in the future if you copy your vettore objects.
If max is 0 when you call inserisci you prompt the user for a value of max, you don't check that cin succeeds and you don't reallocate v to be large enough to contain max elements.
Not a problem but empty could simply be implemented as:
bool vettore::empty()const{
return riemp==0;
}