题解 | 复数

#include <iostream>
using namespace std;

class FU{
    public:
    int real;
    int vir;

    FU operator+(FU &fu1)
    {
        FU newF;
        newF.real = this->real + fu1.real;
        newF.vir = this->vir + fu1.vir;
        return newF;
    }

    void Print()
    {
        if(vir>=0)cout<<real<<"+"<<vir<<"i"<<endl;
        else cout<<real<<vir<<"i"<<endl;
    }


};

int main() {
    int m;
    cin>>m;
    while(m--)
    {
        FU f1,f2;
        int r1,r2,v1,v2;
        cin>>r1>>v1>>r2>>v2;
        f1.real=r1;
        f1.vir = v1;
        f2.real = r2;
        f2.vir = v2;
        FU ans;
        ans = f1+f2;
    //    cout<<ans.real<<"+"<<ans.vir<<"i"<<endl;
        ans.Print();
    }
}
// 64 位输出请用 printf("%lld")