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public class ComplexNumber{
private double real;
private double imaginary;

public ComplexNumber(double real,double imaginary){
this.real=real;
this.imaginary=imaginary;
}

public double getReal(){
return real;
}

public double getImaginary(){
return imaginary;
}

public ComplexNumber add(ComplexNumber cn){
real=real+cn.real;
imaginary=imaginary+cn.imaginary;
return this;
}

public ComplexNumber substract(ComplexNumber cn){
real=real-cn.real;
imaginary=imaginary-cn.imaginary;
return this;
}

public ComplexNumber multiply(ComplexNumber cn){
real=real*cn.real;
imaginary=imaginary*cn.imaginary;
return this;
}

public ComplexNumber divide(ComplexNumber cn){
real=real/cn.real;
imaginary=imaginary/cn.imaginary;
return this;
}

public

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