static void Main(string[] args)
{
Child1 childObj1 = new Child1();
childObj1.setbal(120000);//child1 class method
childObj1.setdata(100, 5, 4500000);
childObj1.getdata();
Console.WriteLine("Child have {0} Rs.", childObj1.getbal());
childObj1.combineBal();
Console.ReadKey();
}