public void PrintAll()
{
var courses = courseDatabase.CourseNames();
System.Console.WriteLine(string.Join(", ", courses));
}
public void PrintAll(ICourseData data)
{
var courses = data.CourseNames();
}
public void PrintAll(ICourseData data)
{
var courses = data.CourseNames();
// print courses
}
public void PrintAll()
{
var courses = database.CourseNames();
//print courses
}