package test;
import java.sql.*;
import java.util.Scanner;
public class jjcc {
	static double  x,y;
	Scanner in=new Scanner(System.in);
	x=in..nextDouble();
	y=in..nextDouble();
	//addition函数实现的是两个数x和y的加法运算
		public void addition() {
			double  result;
			result=x+y;
			System.out.println(x+"+"+y+"="+result);
			}
	//subtraction函数实现的是两个数x和y的减法运算
		public void subtraction() {
			double result;
			result=x-y;
			System.out.println(x+"-"+y+"="+result);
		}
	//multiplication函数实现的是两个数x和y的乘法运算
		public void multiplication() {
			double  result;
			result=x*y;
			System.out.println(x+"*"+y+"="+result);
		}
	//division函数实现的是两个数x和y的除法运算
		public void division() {
			double  result;
			result=x/y;
			System.out.println(x+"/"+y+"="+result);
		}
		public static void main(String[] args) {
		}
		}
}