Overloading, C# - rextester

Overloading

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class ParentClass
    {
        public int ParentMethod(int a, int b)
        {
             Console.WriteLine(a+b);
             return a+b;
         }
        //public int ParentMethod(int a, int b)    --> Error, already defines a member called 'ParentMethod' with the same parameter types and 
        //{                                             //  same return type
             //Console.WriteLine(a+b);
             //return a+b;
         //}
        
        //public string ParentMethod(int a, int b)   --> Error, already defines a member called 'ParentMethod' with the same parameter types and 
        //{                                              //  same return type
            // string aval= a.ToString();
             //string bval= b.ToString();
            //Console.WriteLine(aval+bval);
            // return aval+bval;
         //}
        public int ParentMethod(int a,int b,int c)
        {
            Console.WriteLine(a+b+c);
             return a+b+c;
        }
    }
       public class ChildClass: ParentClass
       {
         public int ParentMethod(int a, int b, int c,int d)
         {
             Console.WriteLine(a+b+c+d);
             return a+b+c+d;
         }
       } 
    
    
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine("Hello, world!");
            ChildClass cc=new ChildClass();
            cc.ParentMethod(1,2);
            cc.ParentMethod(1,2,3);
            cc.ParentMethod(1,2,3,4);
            
            ParentClass pc=cc;
            pc.ParentMethod(3,4);
            
        }
    }
}


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