Cannot figure out what it gives and why

[PranavM16 (Pranav Mendiratta)]

Let n = 6, i = 2

int mask = 1 << i;
cout << n&mask;

What should be the output and why? It is giving a very unexpected output

[aa1 (Abha Agrawal)]

int main() {
	int n=6;
	int i=2;
	int mask = 1 << i; //// === 1* 2^i = 2^2=4
    cout << (n&mask);  ////6&4==4 i.e the output too
}