

#include 
#include 

using namespace std;

//Another simple structure, with only two members.
struct complex_number {
        float real_part;
        float imag_part;
};

//The following functions show how to accept a structure as an input argument
//type.  The first calculates the magnitude of a complex number:
float Magnitude(complex_number z) {
        float magnitude = sqrt( pow(z.real_part,2) + pow(z.imag_part,2) );
        return magnitude;
};

//The second calculates the argument.
float Argument(complex_number z) {
        float argument = atan2( z.imag_part,z.real_part );
        argument *= 180.0 / M_PI;
        return argument;
};

main() {
        complex_number z;
        z.real_part = 1.0;
        z.imag_part = 1.0;
        cout << "Magnitude is " << Magnitude(z) << endl;
        cout << "Argument is  " << Argument(z) << endl;
}