struct A {
	int x;
	char y;
}; 
int main() {
	A a, b;
	memset(&a, NULL, sizeof(a));
	memset(&b, NULL, sizeof(b));
	a.x = 10; a.y = 'q';
	a.x = 10; a.y = 'q';

	if(memcmp(&a, &b, sizeof(a)))
		cout << "!=";
	else
		cout << "=";

	return 0;
}