运算符重载的一个例子

class MainClass
{
    struct Vector
    {
        public double x, y, z;
        public Vector(double x, double y, double z)
        {
            this.x = x;
            this.y = y;
            this.z = z;
        }
        public Vector(Vector rhs)
        {
            x = rhs.x;
            y = rhs.y;
            z = rhs.z;
        }

        public override string ToString()
        {
            return "(" + x + "," + y + "," + z + ")";
        }

        public static Vector operator +(Vector lhs, Vector rhs)
        {
            Vector result = new Vector(lhs);
            result.x += rhs.x;
            result.y += rhs.y;
            result.z += rhs.z;
            return result;
        }
    }
    static void Main()
    {
        Vector vect1, vect2, vect3;
        vect1 = new Vector(3.0, 3.0, 1.0);
        vect2 = new Vector(2.0, -4.0, -4.0);
        vect3 = vect1 + vect2;
        Console.WriteLine("vect1=" + vect1.ToString());
        Console.WriteLine("vect2=" + vect2.ToString());
        Console.WriteLine("vect3=" + vect3.ToString());

    }

}

输出结果：

vect1=(3,3,1)
vect2=(2,-4,-4)
vect3=(5,-1,-3)