Mine

#include <iostream>       // for cout, cin, etc
using namespace std;      // to elminate need for std

class UnivPerson {
private:
  // every UnivPerson has a name and social #
  string firstName, lastName, social;
public:
  /** core methods */
  // default constructor
  UnivPerson() {
    cout << "Default UnivPerson Constructor called." << endl;
  }
  // four param constructor
  UnivPerson::UnivPerson( const string& first, const string& last, const string& soc ) 
    : firstName( first ), lastName( last ), social( soc ) 
  {
    cout << "UnivPerson constructor called for " << getLastName() << endl;
  }
  // destructor
  ~UnivPerson()
  {
    cout << "UnivPerson destructor called for " << getLastName() << endl;    
  }

  // present output for the base UnivPerson
  void output( ostream& os ) const 
  {
    os << lastName << ", " << firstName << " (" << social << ")" << endl;
  } 

  /** basic get methods */
  string getFirstName() const { return firstName; }
  string getLastName() const { return lastName; }
  string getSocial() const { return social; }
};

class Student : public UnivPerson {
private:
  string major;   // every student has a major of study
  double gpa;     // every student has a gpa on a 4.0 scale
  int id;         // every student has an id number
public:
  /** core methods */
  Student() 
  {
    cout << "Student default constructor called." << endl;
  }
  // four param constructor
  Student::Student( const UnivPerson& P, const string& M, double G, int I ) 
    : UnivPerson( P ), major( M ), gpa( G ), id( I ) 
  {
    cout << "Student four-parameter constructor called for " << getLastName() << endl;
  }
  // six param constructor
  Student::Student( const string& first, const string& last, const string& soc, const string& ma, double g, int i ) 
    : UnivPerson( first, last, soc ), major( ma ), gpa( g ), id( i ) 
  {
    cout << "Student six-parameter constructor called for " << getLastName() << endl;
  }
  // destructor
  Student::~Student() 
  {
    cout << "Student DESTRUCTOR called." << endl;
  }

  /** get and set methods */
  string getMajor() const { return major; };
  double grade() const { return gpa; };
  int identity() const { return id; };
};

int main( int argc, char* argv[] )
{
  UnivPerson Person( "Fooperson", "Bar", "234-3455" );
  Student One( Person, "Psychology", 3.21, 245345 );
  Student Two( Person, "Business", 3.42, 3454324 );

  Person.output( cout );
  One.output( cout );
  Two.output( cout );

  return 0;
}


ERRORS: 
test.cpp: In constructor `Student::Student(const UnivPerson&, const std::string&, double, int)':
test.cpp:53: error: class `Student' does not have any field named `gnu_dev_major'
test.cpp: In constructor `Student::Student(const std::string&, const std::string&, const std::string&, const std::string&, double, int)':
test.cpp:59: error: class `Student' does not have any field named `gnu_dev_major'