ComplexNumbers

public class ComplexNumbers {
private int real;
    private int imaginary;
    public ComplexNumbers(int real,int imaginary)
    {
        this.real=real;
        this.imaginary=imaginary;
    }
    public void plus(ComplexNumbers c2)
    { 
     this.real =(this.real+c2.real);
         this.imaginary=this.imaginary+c2.imaginary;
     
    }
    public void multiply(ComplexNumbers c2)
        
    {
      int temp=this.real;  
    this.real = (this.real*c2.real)-(this.imaginary*c2.imaginary);
        this.imaginary =temp*c2.imaginary+this.imaginary*c2.real; 
            
    }
                public void print()
                {
                    System.out.println(this.real+" + "+"i"+this.imaginary );
                }



 public static void main(String[] args) {
		Scanner s = new Scanner(System.in);

		int real1 = s.nextInt();
		int imaginary1 = s.nextInt();

		int real2 = s.nextInt();
		int imaginary2 = s.nextInt();

		ComplexNumbers c1 = new ComplexNumbers(real1, imaginary1);
		ComplexNumbers c2 = new ComplexNumbers(real2, imaginary2);

		int choice = s.nextInt();
		 
		if(choice == 1) {
			// Add
			c1.plus(c2);
			c1.print();
		}
		else if(choice == 2) {
			// Multiply
			c1.multiply(c2);
			c1.print();
		}
		else {
			return;
		}
	}
}