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Код: Выделить всё

class Complex
{
    public:
       Complex(double the_real, double the_imaginary);
    
       Complex(double real_part);
    
       Complex();
    
       friend bool operator ==(const Complex& first, const Complex& second);
    
       friend Complex operator +(const Complex& first, const Complex& second);
    
       friend Complex operator -(const Complex& first, const Complex& second);
    
       friend Complex operator *(const Complex& first, const Complex& second);
    
       friend istream& operator >>(istream& ins, Complex& number);
     
       friend ostream& operator <<(ostream& outs, const Complex& number);
    
    private:
       double real;
       double imagine;
};

Complex::Complex(double the_real, double the_imaginary): real(the_real), imagine(the_imaginary)
{
    //Тело намеренно оставлено пустым
}

Complex::Complex(double real_part): real(real_part), imagine(0)
{
    //Тело намеренно оставлено пустым
}

Complex::Complex(): real(0), imagine(0)
{
    //Тело намерено отсавлено пустым
}

bool operator ==(const Complex& first, const Complex& second)
{
    return((first.real == second.real) && (first.imagine == second.imagine));
}

Complex operator +(const Complex& first, const Complex& second)
{
    Complex temp;
    temp.real = first.real + second.real;
    temp.imagine = first.imagine + second.imagine;

    return temp;
}

Complex operator -(const Complex& first, const Complex& second)
{
    Complex temp;
    temp.real = first.real - second.real;
    temp.imagine = first.imagine - second.imagine;

    return temp;
}

Complex operator *(const Complex& first, const Complex& second)
{
    Complex temp;
    temp.real = (first.real * second.real) - (first.imagine * second.imagine);
    temp.imagine = (first.real * second.imagine) + (first.imagine * second.real);

    return temp;
}

istream& operator >>(istream& ins, Complex& number)
{
    //Формат ввода значений: (1, 2)
    char ch1, ch2, ch3;
    ins >> ch1;
    ins >> number.real;
    ins >> ch2;
    ins >> number.imagine;
    ins >> ch3;

    if(ch1 != '(' || ch2 != ',' || ch3 != ')')
    {
        cout << "Illegal complex number format.\n";
        exit(1);
    }

    return ins;
}

ostream& operator <<(ostream& outs, const Complex& number)
{
    outs << '(';
    outs << number.real;
    outs << ',';
    outs << number.imagine;
    outs << ')';

    return outs;
}

Код: Выделить всё

const Complex I_COMPLEX (0, 1);

Код: Выделить всё

Complex operator +(const Complex& first, const Complex& second);

Complex Complex: :o perator +(const Complex& first, const Complex& second)
{
    Complex temp;
    temp.real = first.real + second.real;
    temp.imagine = first.imagine + second.imagine;

    return temp;
}