输入运算符重载后，为什么不能正常输入？

Question

运算符已经重载完成。但输出k仍然是（0，0）

istream& operator>>(istream& input, Complex&a)
{
    input.ignore(); // skip (
    input >> a.imaginary; // input imaginary
    input.ignore(); // skip,
    input >>a.real; // input real
    input.ignore(); // skip )
    return input; // enables cin >> a >> b >> c;
} // end function operator>> 

int main()
{
    Complex x, y(4.3, 8.2), z(3.3, 1.1), k;
    cout << "Enter a complex number in the form: (a, b)\n? ";
    cin>> k; // demonstrating overloaded >>    
        cout << "x: " << x << "\ny: " << y << "\nz: " << z << "\nk: "       
        << k << '\n'; // demonstrating overloaded <<    
    x = y + z; // demonstrating overloaded + and = 
    cout << "\nx = y + z:\n" << x << " = " << y << " + " << z << '\n';    
    x = y - z; // demonstrating overloaded - and = 
    cout << "\nx = y - z:\n" << x << " = " << y << " - " << z << '\n';
    x = y * z; // demonstrating overloaded * and =    
    cout << "\nx = y * z:\n" << x << " = " << y << " * " << z << "\n\n"; 
    if (x != k) // demonstrating overloaded !=       
        cout << x << " != " << k << '\n';    
    cout << '\n';    
    x = k;    
    if ( x == k ) // demonstrating overloaded ==      
        cout << x << " == " << k << '\n';    
    return 0;
}

输出如下

输入了（2，3），但k输出仍为（0，0）

Answer 1

https://blog.csdn.net/zwe7616175/article/details/81216118