Basic keyword in c#

In program, you write, "hello, welcom to c#" and in output you get "hello, welcome to c#". That is not possible.

http://www.c-sharpcorner.com/UploadFile/8ef97c/10-most-used-keyword-in-C-Sharp-net/

10 Most Used Keywords In C# http://www.c-sharpcorner.com/UploadFile/8ef97c/10-most-used-keyword-in-C-Sharp-net/

Console.readkey() is not used to end the program. It is used for getting input key from console.

https://msdn.microsoft.com/en-us/library/x53a06bb.aspx