java学习第44天2020/8/18

import java.util.Scanner;
public class complexa {
	double real,image;
	complexa()
	{
		real=0;image=0;
	}
	public void set(double m,double n)
	{
		real=m;image=n;
	}
	public void fan()
	{
		real=-real;
		image=-image;
	}
	public void add(complexa l) {
		System.out.println(real+l.real+"+"+(image+l.image)+"i");
	}
	public static void main(String [] args)
	{
		complexa q=new complexa();
		complexa w=new complexa();
		Scanner input=new Scanner(System.in);
		double []s=new double[4];
		for(int i=0;i<4;i++)
		{
			s[i]=input.nextDouble();
		}
		q.set(s[0],s[1]);
		w.set(s[2],s[3]);
		q.add(w);
		w.fan();
		q.add(w);
		
	}
}