using System;

namespace WinFormsApp1
{
    internal class A
    {
        private decimal a = 3;
        private decimal b = 5;

        public decimal C1 => a++;
        public decimal C2 => b++;

        public A() { }

        public A(int a, int b)
        {
            this.a = a;
            this.b = b;
        }

        public decimal D1()
        {
            return C1 * C1;
        }

        public decimal D2()
        {
            return C2 * C2;
        }
    }
}