LetterDemo.cs+Step 21 using static System.Console;2 class LetterDemoNext, include a3 {static void Main(){// Write your code here}8 }ToString() method that4overrides the Object5class's ToString()method and returns a7string that contains the9.name of the class (using10 // Write your classes here11GetType() ) and theLetter 's data fieldvalues.Create a child classnamedCertifiedLetter thatincludes an auto-implemented propertyTrackingNumber (oftype string ) that holdsa tracking number for theletter.COII 1 using static System.Console;2 class LetterDemoCreate an application3 {static void Main(){// Write your code here}8 }class named4LetterDemo thatinstantiates objects of twoclasses named Letterand CertifiedLetterand that demonstrates all10 // Write your classes here11their methods.The classes are used by acompany to keep track ofletters they mail to clients.The Letter classincludes auto-implemented properties forthe Name of the recipientand the Date mailed(stored as strings).ON

Actually, program is a executable software that runs on a computer.

I using statić Syštěm.Côñšólé; 2 class LetterDemo Next, include a 3 { static void Main() { // Write your code here } 8 } ToString() method that 4 overrides the Object class's ToString() method and returns a string that contains the 9. name of the class (using 10 // Write your classes here 11 GetType() ) and the Letter 's data field values. Create a child class named CertifiedLetter that includes an auto- implemented property TrackingNumber (of type string ) that holds a tracking number for the letter.

I using statić Syštěm.Côñšólé; 2 class LetterDemo Next, include a 3 { static void Main() { // Write your code here } 8 } ToString() method that 4 overrides the Object class's ToString() method and returns a string that contains the 9. name of the class (using 10 // Write your classes here 11 GetType() ) and the Letter 's data field values. Create a child class named CertifiedLetter that includes an auto- implemented property TrackingNumber (of type string ) that holds a tracking number for the letter.

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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