task3

#include <iostream>
#include <math.h>

using namespace std;

class Complex {
    public:
        double r; // real ( + 3 )
        double i; // unreal ( + 3i )
        void input() {
            double a, b;
            cout << "Please, enter complex number (a+bi): ";
            cin >> a >> b;
            this->r = a;
            this->i = b;
        }
        Complex operator+(Complex tmp) {
            Complex a;
            a.r = this->r + tmp.r;
            a.i = this->i + tmp.i;
            return a;
        }
        Complex operator+(int tmp) {
            Complex a;
            a.r = this->r + tmp;
            a.i = this->i;
            return a;
        }
        Complex operator-(Complex tmp) {
            Complex a;
            a.r = this->r - tmp.r;
            a.i = this->i - tmp.i;
            return a;
        }
        Complex operator-(int tmp) {
            Complex a;
            a.r = this->r - tmp;
            a.i = this->i;
            return a;
        }
        Complex operator*(Complex tmp) {
            Complex a;
            a.r = this->r*tmp.r + this->i*tmp.i;
            a.i = this->r*tmp.i + this->i*tmp.r;
            return a;
        }
        Complex operator*(int tmp) {
            Complex a;
            a.r = this->r*tmp;
            a.i = this->i*tmp;
            return a;
        }
        Complex operator/(Complex tmp) {
            Complex a;
            a.r = (this->r * tmp.r + this->i * tmp.i)/(tmp.i*tmp.i + tmp.r*tmp.r);
            a.i = (this->i * tmp.r - this->r * tmp.i)/(tmp.i*tmp.i + tmp.r*tmp.r);
            return a;
        }
        Complex operator/(int tmp) {
            Complex a;
            a.r = this->r/tmp;
            a.i = this->i/tmp;
            return a;
        }
        void output() {
            if (this->r != 0)
                cout << this->r;
            if ((this->i > 0)&&(this->r != 0))
                cout << "+";
            if (this->i != 0)
                cout << this->i << "i";
            if ( ( this->r == 0 ) && ( this->i == 0 ) )
                cout << this->r;
            cout << endl;
        }
};

int main()
{
    int n;
    Complex *mass;
    cout << "Please, enter n: ";
    cin >> n;
    mass = new Complex[n];
    for (int i = 0; i<n; i++)
        mass[i].input();

    cout << endl << "[0]+[1]=";
    Complex tmp = mass[0] + mass[1];
    tmp.output();
    cout << "[0]-[1]=";
    tmp = mass[0] - mass[1];
    tmp.output();
    cout << "[0]*[1]=";
    tmp = mass[0] * mass[1];
    tmp.output();
    cout << "[0]/[1]=";
    tmp = mass[0] / mass[1];
    tmp.output();
    cout << endl;

    int index = 0;
    for (int i = 1; i<n; i++)
        if (fabs(mass[index].r-mass[index].i) > fabs(mass[i].r-mass[i].i))
            index = i;
    cout << "Searched complex number: ";
    mass[index].output();
    return 0;
}