Access Violation

0: #include <iostream>
1:
2: class base
3: {
4: public:
5:     base(int i) : n(i)
6:     {
7:     }
8:    
9:     virtual void print()
10:     {
11:         std::cout << "N: " << n << " ";
12:     }
13:    
14: private:
15:     int n;
16: };
17:
18: class derived : public base
19: {
20: public:
21:     derived(int x, int y) : base(x), j(y), t(0)
22:     {
23:     }
24:    
25:     virtual void print()
26:     {
27:         base::print();
28:         std::cout << "J: " << j << std::endl; 
29:     }
30:    
31: private:
32:     int j;
33:     int t;
34: };
35:
36: void printIt(base a[], int n)
37: {
38:     for (int i=0; i < n; i += 2)
39:     {
40:         a[i].print();
41:     }
42: }
43:
44: void main()
45: {
46:     derived d[] =   {
47:                     derived(1,7),
48:                     derived(2,6),
49:                     derived(3,5),
50:                     derived(4,4),
51:                     derived(5,3),
52:                     derived(6,2),
53:                     derived(7,1)
54:                     };
55:                        
56:    
57:     printIt(d, sizeof(d) / sizeof(d[0]));
58: }