public Sophuc Hieu(Sophuc t2) { Sophuc tmp = new Sophuc(); tmp.thuc = this.thuc - t2.thuc; tmp.ao = this.ao - t2.ao; return tmp; }
public static Sophuc operator+(Sophuc t1,Sophuc t2) { Sophuc tmp = new Sophuc(); tmp.thuc = t1.thuc + t2.thuc; tmp.ao = t1.ao + t2.ao; return tmp; }
public Sophuc Tong(Sophuc t2) { Sophuc tmp = new Sophuc(); tmp.thuc = this.thuc + t2.thuc; tmp.ao = this.ao + t2.ao; return tmp; }
public Sophuc(Sophuc t2) { this.thuc = t2.thuc; this.ao = t2.ao; }