// Create student with knowledge
public Student(string name, int levelOfKnowledge) : base(levelOfKnowledge)
{
_name = name;
SetKnowledge(levelOfKnowledge);
PersonsBase.AddPersonToBase(this); // Student added to base when created
}
// Create student without knowledge
public Student(string name) : base(0)
{
_name = name;
PersonsBase.AddPersonToBase(this); // Student added to base when created
}