Function func

CPP/recursion/2_to_power_n.cpp:8–12

#define mod 1000000007
#define endl '\n'
int func(int n){
	if(n==0)
		return 1;
	return (2*func(n-1));
}
int main(){
	cin.tie(0)->sync_with_stdio(0);
	int n;cin>>n;