题解 | #复数#

#include <iostream>
using namespace std;

class Complex {
  private:
    int a;
    int b;
  public:
    Complex(int i = 0, int j = 0) {
        a = i;
        b = j;
    }
    Complex operator +(Complex f) {
        this->a += f.a;
        this->b += f.b;
        return Complex(this->a, this->b);
    }
    void display() {
        if (b < 0) cout << a << b << "i" << endl;
        else cout << a << "+" << b << "i" << endl;
    }
};

int main() {
    int m, a, b, c, d;
    cin >> m;
    for (int i = 0; i < m; i++) {
        cin >> a >> b >> c >> d;
        Complex f1(a, b);
        Complex f2(c, d);
        (f1 + f2).display();
    }
}