클래스로 사칙연산

class MyMath{//클래스로 사칙 연산하기
	
	//덧셈
	public long add(long a, long b){
		return a + b;
	}
	//뺄셈
	public long minus(long a, long b){
		return a - b;
	}
	//곱셈
	public long multi(long a, long b){
		return a * b;
	}
	//나눗셈
	public double divide(double a , double b){
		return a / b;
	}
}

public class MyMathTest {
	public static void main(String[] args){
		MyMath my = new MyMath();
		long result = my.add(5L,6L);
		System.out.println("add : "+ result);
		long result2 = my.minus(7L, 2L);
		System.out.println("minus : "+ result2);
		long result3 = my.multi(2L, 3L);
		System.out.println("multi : "+ result3);
		double result4 = my.divide(6L, 3L);//long -> double
		System.out.println("divide : "+ result4);
	}
}

add : 11

minus : 5

multi : 6

divide : 2.0