how to use reference of a abstract class?

Question

childclass obj=new childclass; absparent p=obj; p.test1();p.test2();p.test3(); where test1 and test 2 are methods of abstract class while test 3 are methods of child class

Vulpes · Answer

@samrat You can't call test3 via an 'absparent' reference because it is a method of 'childclass' and the parent class doesn't therefore know anything about it. However you could call all 3 methods via a 'childclass' reference: childclass obj = new childclass(); obj.test1(); obj.test2(); obj.test3();

Munesh Sharma · Answer

see this one using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication13 { abstract class mcn { public int add( int a int b) { return (a + b); } } class mcn1 : mcn { public int mul( int a int b) { return a * b; } } class test { static void Main( string [] args) { mcn1 ob = new mcn1 (); int result = ob.add(5 10); Console .WriteLine( the result is {0}  result); } } }