private static void SaveGrades(IGradeTracker book)
{
using (StreamWriter outputFile = File.CreateText("grades.txt"))
{
book.WriteGrade(outputFile);
}
}
private static void SaveGrades(IGradeTracker book)
{
// using is used to dispose unneeded data if an unhandled error occurred.
using (StreamWriter output = File.CreateText("Grades.txt"))// Create an empty text file with File.createText which returns data with StreamWriter type
{
//The WriteGrade method in GradeBook class expects data of StreamWriter type
book.WriteGrade(output);
// output.Close(); // This has to be used to save the data, as any type of Stream whether it is a FileStream or NetworkStream,
// Streams has tendency for buffering
}
}
private static void AddGrades(IGradeTracker book)
{
book.AddGrade(91);
book.AddGrade(45.5f);
book.WriteGrade(Console.Out);
}