题解 | #复数#

#include <iostream>
using namespace std;
struct Complex {
    int real, imag;
    Complex operator+(const Complex &other) {
        int real = this->real + other.real;
        int imag = this->imag + other.imag;
        return Complex{real, imag};
    }
};
int main() {
    int m;
    cin >> m;
    while (m--) {
        int real1, imag1, real2, imag2;
        cin >> real1 >> imag1 >> real2 >> imag2;
        Complex a{real1, imag1}, b{real2, imag2};
        Complex ans = a + b;
        if (ans.imag > 0) cout << ans.real << '+' << ans.imag << 'i' << endl;
        else cout << ans.real << ans.imag << 'i' << endl;
    }
    return 0;
}