Review, divide two integers

[TheJollyRoger]

Problem: "Write a value-returning function called isFactor. It should take 2 integer parameters and return true if the 2nd number can be divided by the 1st number evenly (in other words, if it has no remainder). So isFactor(4, 16) should return true because 16/4 = 4, but isFactor(4, 15) should return false because 15/4 = 3.75. Test it in int main()."

When I debug my code I get" error C4716: 'divide': must return a value", but I do not understand why I am getting that error.

bool divide(int x, int y)
{
	int rest = x / y;

	if (rest == 0)
		cout << "True" << endl;
	else
		cout << "False" << endl;
}
// main function
int main()
{
	int x;
	int y;
	

	//prompts user for input
	cout << "Input first value: " << endl;
	cin >> x;

	cout << "Input second value: " << endl;
	cin >> y;

	if
		(divide(x, y) == true)
		cout << y << "can be divided by " << x << endl;
	else
		cout << y << "can not be divided by " << x << endl;

	return 0;
}