static void main(string[] args)
{
person person = new person("mike", 20);
person.GetNameAndAge();
Teacher teacher = new Teacher("thomas", 35, "190302", "math");
teacher.GetNameAndAge();
student student = new student("sara", 19, "10506", "*****@*****.**");
student.GetNameAndAge();
console.readkey()
;
}
