Parallelepiped

using System;
using System.Collections.Generic;
using System.Text;

namespace ex1
{
    class Parallelepiped : Base
    {
        protected internal Parallelepiped() : base()
        {


        }

        protected internal Parallelepiped(int a, int b, int c) : base(a, b, c)
        { if (I1 < 0) I1 = 0;
            if (I2 < 0) I2 = 0;
            if (I3 < 0) I3 = 0;

        }
        protected internal int Volume()
        {
            int v = I1 * I2 * I3;

            return v;
        }
        protected internal int Square()
        {
            int s = 2*I1 * I2+2*I2 * I3+2*I1*I3;

            return s;
        }
        protected internal Parallelepiped Bigger(Parallelepiped p)
        {

            if (p.Volume() >= this.Volume()) return p;
            else return this;

        }
    }
}