Write a program to overload arithmetic minus operator for subtracting two complex numbers (use constructors also).

Sure, here is a Python program that overloads the arithmetic minus operator for subtracting two complex numbers using constructors:

class Complex:
    def __init__(self, real, imag):
        self.real = real
        self.imag = imag

    # Overloading the '-' operator
    def __sub__(self, other):
        return Complex(self.real - other.real, self.imag - other.imag)

    def __str__(self):
        return f"{self.real} - {self.imag}i"


# Creating two complex numbers
c1 = Complex(3, 2)
c2 = Complex(1, 2)

# Subtracting two complex numbers using overloaded '-' operator
c3 = c1 - c2

print("The subtraction of two complex numbers is", c3)

In this program, we define a class Complex to represent complex numbers. We define a constructor __init__ to initialize the real and imaginary parts of a complex number. We overload the - operator by defining a method __sub__ that returns a new Complex object representing the difference of two complex numbers. The __str__ method is used to represent the Complex object as a string.