My idiotic sence of Array's with Operators and Referent's

[Factors]

So far I understand that the basic purpose of an array's is to save a sequence of integer's/string/ data value's in one single "space"
so im guessing that this mean's that i can manipulate the array in many way's but if so then what are it's limit.
i believe that what im trying to ask is, if i can store data within an array does that mean that I can use pointer's(*) and also reference's(&) as manipulation, and if so then how come this code i stumble upon to make does not work in any way.

code:
#include <iostream>
#include <cmath>
using namespace std;

int main()
{
int a1,a2,a3;

int *a[3] = {&a1,&a2,&a3} ;

cin >> a1 >> a2 >> a3 ;

cout << *a[3] ;


system("PAUSE");
return 0;
}

by the way any kind of knowledge that might be usefull to understand arrays is appriciated if shared

[EricDu]

The line below is the cause. offset's range used with array in C/C++ is from 0 to arraySize-1.

cout << *a[3] ;

[Factors]

oh i get it so basically the deferenciatioin(*) pointer can only get one value at a time? or am i way off?
because after thinking about what you said i desided to try spliting my array's into individal cout's

cout << *a[0] << *a[1] << *a[2] ;

or am i wrong and theres another reason the code work's properly now?

[EricDu]

Exactly what you understood is correct!