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c++complex-numbers
nagendra
nagendra

Reputation: 245

How to use complex numbers in c++?

How can I use a complex variable in C++ code?

I do have the separate real and imaginary parts psi_rl and psi_im. Now I have to write psi = psi_rl + i psi_im. How would I use one variable for this?

Upvotes: 0

Views: 4277

Answers (2)

David Heffernan
David Heffernan

Reputation: 613511

Something like this should give you the basic idea:

class complex
{
public:
    double real;
    double imag;
    complex(double real, double imag): real(real), imag(imag) {};
    complex operator+(complex c) { return complex(this->real+c.real, this->imag+c.imag); };
};

int main(int argc, char* argv[])
{
    complex a(1,2);
    complex b(-3,6);
    complex c = a+b;
    return 0;
}

Upvotes: 1

Ben Voigt
Ben Voigt

Reputation: 283893

You should read the documentation for std::complex, it will give you answers to these questions and many more.

Upvotes: 4

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