static void Main(string[] args)
{
//instance => object
var first_donor = new Donor();
var first_patient = new Patient(first_donor);
// create a new project
var first_project = new Project(first_patient, "first project");
var Y = new Donation(first_donor, first_project);
// create another project
var second_project = new Project(first_patient, "second project");
Console.WriteLine($"Patient No: { first_patient.PatientID}, Project Type: {first_project.Name}, Donor NO:{first_donor.DonorID}");
}
public Patient(Donor inputDonor)
{
PatientDonor = inputDonor;
PatientID = lastpatientno + 1;
}
public Donation(Donor A, Project B)
{
DonorID = A;
ProjectID = B;
}