using System;

public class GradeBookTest {

static void DisplayMessage(string courseName) {

  Console.WriteLine("Welcome to the grade book for\n{0}!", courseName);

 } // end method DisplayMessage

​

// Main method begins program execution

public static void Main(string[] args){

// prompt for and input course name

   Console.WriteLine("Please enter the course name:");

    string nameOfCourse = Console.ReadLine(); // read a line of text

    Console.WriteLine(); // output a blank line

// call DisplayMessage method 

// and pass nameOfCourse as an argument

     DisplayMessage(nameOfCourse);

  } // end Main

} // end class GradeBookTest

​