Changing scope from member to global function - c++

Question

I'm attempting to change a print function from a member to a global function without modifying the main function. I am unable to compile this without modifying the main function, though.
class Student
{
char* name;
long ssn;
public:
Student (char*, long);
//void print();
char * getName ( );
long getSsn ( );
};
Student::Student(char* temp_name, long temp_ssn)
{
name = new char[strlen(temp_name) +1];
strcpy(name,temp_name);
ssn = temp_ssn;
}
char * Student::getName()
{
return name;
}
long Student::getSsn()
{
return ssn;
}
void print()
{
cout << "Name: " << getName() << endl;
cout << "SSN: " << getSsn() << endl;
}
int main ( )
{
Student S1("Mike", 222222222L);
S1.print();
return 0;
}
In particular, I was wondering if it is necessary to include void print(); in the public: section of the Student class? Or would that make it a member function?
Is it actually possible to do this without modifying the main function?
How do I access the class from a global function? Am I going to go crazy? Thank you, everyone.

Answer 1

Here's how to make print a global function.
class Student
{
char* name;
long ssn;
public:
Student (char*, long);
char * getName ( );
long getSsn ( );
};
Student::Student(char* temp_name, long temp_ssn)
{
name = new char[strlen(temp_name) +1];
strcpy(name,temp_name);
ssn = temp_ssn;
}
char * Student::getName()
{
return name;
}
long Student::getSsn()
{
return ssn;
}
void print(Student& s)
{
cout << "Name: " << s.getName() << endl;
cout << "SSN: " << s.getSsn() << endl;
}
int main ( )
{
Student S1("Mike", 222222222L);
print(S1);
return 0;
}
Notice that I've added a Student& parameter to print, it has to know which student to print after all. And in main I've changed the way print is called so it has a Student parameter, instead of calling a method on Student.
I'm sure the point of the exercise is to show that you can achieve the same effects using either global functions or member functions.