static void Main(string[] args)
{
GradeBook g1 = new GradeBook();
GradeBook g2 = g1;
g1.Name = "Scott Grade Book";
Console.Write(g2.Name);
SpeechSynthesizer synth = new SpeechSynthesizer();
synth.Speak("Всем привет");
GradeBook book = new GradeBook();
book.AddGrade(91);
book.AddGrade(81.5f);
book.AddGrade(75);
GradeStatistics stats = book.ComputeStatictics();
Console.WriteLine(stats.AverageGrade);
}
