public static void main(String[] args) {
int re1, im1, re2, im2;
System.out.println("Calling default constructor");
Complex c = new Complex(); // calling default constructor
c.display();
System.out.println("\nCalling parameterized constructor");
Complex c1 = new Complex(1, 2); // calling parameterized constructor
Complex c2 = new Complex(3, 4); // calling parameterized constructor
c1.display();
System.out.println();
c2.display();
System.out.println("\nCalling copy constructor");
Complex c3 = new Complex(c1); //
c3.display();
System.out.print("\nAdding ");
c1.display();
System.out.print(" & ");
c2.display();
System.out.print("\nAnswer: ");
c1 = c1.add(c2); // Addition
c1.display();
System.out.print("\nSubtracting ");
c1.display();
System.out.print(" & ");
c2.display();
c1 = c1.subtract(c2); // Subtraction
System.out.print("\nAnswer: ");
c1.display();
System.out.println();
}
public void testSubtract() {
Complex x = new Complex(3.0, 4.0);
Complex y = new Complex(5.0, 6.0);
Complex z = x.subtract(y);
assertEquals(-2.0, z.getReal(), 1.0e-5);
assertEquals(-2.0, z.getImaginary(), 1.0e-5);
}
public void testSubtractNaN() {
Complex x = new Complex(3.0, 4.0);
Complex z = x.subtract(Complex.NaN);
assertTrue(z.isNaN());
}
