#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>

using namespace std;

/** g++ -m32 -o vptrShellcode vptrShellcode.cpp -z execstack **/
class Person{
	public:
		virtual void talk(const char *name) = 0;
};

class NiceGirl: public Person{
	public:
		void talk(const char* name){
			cout << "My name is " << name << ",and all girls are beautiful" << endl;
		}
};

class TheManWhoSoldTheWorld:public Person{
	public:
		void talk(const char* name){
			cout << "And his name is " << name << " !!" << endl;
			cout << "We passed upon the stair, we spoke of was and when" << endl;
		}
};

void displayMessage(int);

int main(int argc, char ** argv){
	if(argc < 2){
		cout << "Usage : ./vptrShellcode <bool>" << endl;
		return 1;
	}
	displayMessage(atoi(argv[1]));
	return 0;
}

void displayMessage(int gender){
	Person* person;
	if(gender){
		person = new TheManWhoSoldTheWorld;
	}
	else{
		person = new NiceGirl;
	}
     char name[32];
     gets(name);
     person->talk(name);
     delete person;
}