class ex04{
	void div(int dividend, int divisor){
		if(divisor == 0)
			System.out.println("error! / by zero!");
		else 
			System.out.println(dividend/divisor + "\t" + dividend%divisor);
	}//div
	public static void main(String args[]){
		ex04 e = new ex04();
		e.div(8, 5);
		e.div(12, 4);
		e.div(3, 0);
		e.div(0, 8);
	}
}