void main() {
    int start = 0;
    int* a = new int[4];
    int** b = &a;
    int* c = *b;
    test(a == c);
    test(&start != a);
    
    test(length(a));
    test(length(b));
    test(length(c));
    
    a[0] = 50;
    a[1] = 60;
    a[2] = 70;
    a[3] = 80;
    
    test(a[0]);
    test(a[1]);
    test(a[2]);
    test(a[3]); 
       
    test(*a);
    
    delete a;
}