棲枝Fairy

#include <iostream>
#include <cmath>
using namespace std;

class Complex{
    public:
        Complex (double a=0,double b=0);
        Complex (Complex &t);
        void add( Complex y);
        void show();
        double mod();
    private:
        double real;
        double imaginary;
};

Complex::Complex(double a,double b){
    real=a;
    imaginary=b;
}

Complex::Complex(Complex &t){
    real=t.real;
    imaginary=t.imaginary;
}

void Complex::add(Complex y){
    real=real+y.real;
    imaginary=imaginary+y.imaginary;
}

double Complex::mod(){
    return sqrt(real*real+imaginary*imaginary);
}

void Complex::show(){
    cout<<real<<"+"<<imaginary<<"i"<<endl;
}


int main (){
    Complex c1(3,5);
    cout << "c1 = " ;
    c1.show();
    cout <<"|c1| = "<<c1.mod()<<endl;
    
    Complex c2(4.5);
    cout << "c2 = ";
    c2.show();
    
    cout << "c1 + c2 = ";
    c1.add(c2);
    c1.show();
    
    return 0;
}