What happens when you attempt to compile and run the following code?

What happens when you attempt to compile and run the following code?

#include

#include

#include

using namespace std;

class A {

int a;

public:

A(int a) : a(a) {}

int getA() const { return a; } void setA(int a) { this?>a = a; }

};

struct Even {

bool operator ()(const A & a, const A &b) {

return (a.getA() % 2)==b.getA() % 2;

}

};

int main () {

int t[] = {1,2,3,2,3,5,1,2,7,3,2,1,10, 4,4,5};

deque d (t,t+15);

deque::iterator it = search_n(d.begin(), d.end(), 3, 2, Even());

cout<< it?d.begin()<

return 0;

}

Program outputs: