[C++]상속에 관련된 질문입니다(if사용)

#include <iostream>
#include <string>
#include <algorithm>
 
#include <cstdlib>
 
#define interface class
#define method virtual
#define pure = 0
 
using namespace std;
 
interface Prof {
public : method string check() pure;
};
 
class FullProf : public Prof {
public : method string check() {
  return "fullProf";
  }
};
 
class NonFullProf : public Prof {
public : method string check() {
    return "nonFullProf";
  }
};
 
void print(Prof* prof) {
  cout << prof->check() << endl;
}
 
int main(int argc, char* argv[]) {
  Prof* profs[] = { new FullProf(), new NonFullProf() };
 
  for_each(profs, profs+2, print);
 
  return EXIT_SUCCESS;
}