#include

#include

using namespace std;

struct Complex {

double a, b;

void printComplex(void);

Complex addComplex(Complex);

Complex subtractComplex(Complex);

Complex multiplyComplex(Complex);

Complex divideComplex(Complex);

};

int main(void) {

int size = 3;

Complex z1 = { 3,4 };

Complex z2 = { 5,0 };

Complex z3;

z3.a = 6;

z3.b = -8;

cout << "Adding, Subrtacting, Multiplying and Devidiing Complex Numbers" << endl;

Complex z4 = z3.addComplex(z1);

z4.printComplex();

Complex z5 = z3.subtractComplex(z2);

z5.printComplex();

Complex z6 = z3.multiplyComplex(z1);

z6.printComplex();

Complex z7 = z3.divideComplex(z1);

z7.printComplex();

system("pause");

return(0);

}

void Complex::printComplex(void) {

if (b >= 0)

cout << a << " + " << b << "i" << endl;

else

cout << a << " - " << -1 * b << "i" << endl;

}

Complex Complex::addComplex(Complex arg) {

Complex x;

x.a = a + arg.a;

x.b = b + arg.b;

return(x);

}

Complex Complex::subtractComplex(Complex arg) {

Complex x;

x.a = a - arg.a;

x.b = a - arg.b;

return(x);

}

Complex Complex::multiplyComplex(Complex arg) {

Complex x;

x.a = a * arg.a - b * arg.b;

x.b = b * arg.b - a * arg.a;

return (x);

}

Complex Complex::divideComplex(Complex arg) {

Complex x;

x.a = a / arg.a - b / arg.b;

x.b = b / arg.b - a / arg.a;

return (x);

}

I need help adding magnitude i had a complete brain fart the function must me :

double magnitude(void);