Task 1

#include <iostream>

struct ComplexNumber
{
    double real = 0;
    double imaginary = 0;
};

ComplexNumber init(double re, double im)
{
    ComplexNumber number = { re, im };

    return number;
}

void print(const ComplexNumber& complex)
{
    std::cout << "Complex number (" << complex.real << ", " << complex.imaginary << "):\n";
    std::cout << "Real part: " << complex.real << std::endl;;
    std::cout << "Imaginary part: " << complex.imaginary << std::endl;
}

ComplexNumber conjugate(const ComplexNumber& complex)
{
    ComplexNumber conjugateComplex = { complex.real, -complex.imaginary };

    return conjugateComplex;
}

ComplexNumber add(const ComplexNumber& lhs, const ComplexNumber& rhs)
{
    ComplexNumber complex = { lhs.real + rhs.real, lhs.imaginary + rhs.imaginary };

    return complex;
}

ComplexNumber subratct(const ComplexNumber& lhs, const ComplexNumber& rhs)
{
    ComplexNumber complex = { lhs.real - rhs.real, lhs.imaginary - rhs.imaginary };

    return complex;
}

ComplexNumber multiply(const ComplexNumber& lhs, const ComplexNumber& rhs)
{
    double real = lhs.real * rhs.real - lhs.imaginary * rhs.imaginary;
    double imaginary = lhs.real * rhs.imaginary + lhs.imaginary * rhs.real;

    ComplexNumber complex = { real, imaginary };

    return complex;
}

ComplexNumber divide(const ComplexNumber& lhs, const ComplexNumber& rhs)
{
    double denominator = (rhs.real * rhs.real + rhs.imaginary * rhs.imaginary);

    double real = (lhs.real * rhs.real + lhs.imaginary * rhs.imaginary) / denominator;

    double imaginary = (lhs.imaginary * rhs.real - lhs.real * rhs.imaginary) / denominator;

    ComplexNumber complex = { real, imaginary };

    return complex;
}

int main()
{
    ComplexNumber complex = multiply({ 0, 1 }, { 0, 1 });

    print(complex);

    return 0;
}