C++ läsa från txt: problem

class Random
{
public:
 int show(int p)
 {
  srand( ( unsigned )time( 0 ) );
  int random_integer;

  random_integer = ( rand ( ) % p ) + 1;
  return random_integer;
 }
};

int word()
{
 std::ifstream read ("example.txt");

 std::string line;
 std::vector < std::string > stuff;

 int counter = 0;
 while (getline(read, line, '\n'))
 {
  if(line.size()!=0)
  {
   stuff.push_back( line );
   counter++;
  }

 }


 read.close();

 Random a;

 zeword=stuff[a.show( counter - 1 )];

 return 0;
}

#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <vector>
#include <cstdlib>
#include <ctime>

std::string zeword;
void play();
void addword();
int word();

int main ()
{
	while(true)
	{
		int choice=0;

		std::cout << "/////////////////////////////\n";
		std::cout << "/ Input: 1 to add a word    /\n";
		std::cout << "/////////////////////////////\n";
		std::cout << "/ Input: 2 to play           \n";
		std::cout << "/////////////////////////////\n";
		std::cout << "/ Input: 3 to quit          /\n";
		std::cout << "/////////////////////////////\n\n";
		std::cin >> choice;

		if(choice==1)
		{
			addword();
		}
		if(choice==2)
		{
			word();
			play();

		}
		if(choice==3)
		{
			return 0;
		}
	}
	return 0;
}

void addword()
{
	std::ofstream myfile ("example.txt", std::ios::app);
	int counter = 0;
	std::vector<std::string> numbersinwords(11);
	numbersinwords[1]="First",numbersinwords[2]="Second",numbersinwords[3]="Third",
		numbersinwords[4]="Fourth",numbersinwords[5]="Fifth",numbersinwords[6]="Sixth",
		numbersinwords[7]="Seventh",numbersinwords[8]="Eighth",numbersinwords[9]="Ninth",
		numbersinwords[10]="Tenth";

	std::vector<std::string> words(11);
	std::vector<int>::size_type i=0;
	std::cout << "/////////////////////////////////////////////////////\n";
	std::cout << "/ How many words would you like to add to the list? /\n";
	std::cout << "/////////////////////////////////////////////////////\n";
	std::cin >> counter;
	if (myfile.is_open()&& counter>0)
	{
		for (i = 0; (int)i <= counter; i++)
		{

			std::cout << "Enter your "<<numbersinwords[i]<<" word: ";
			getline (std::cin, words[i]);
			myfile << words[i] << "\n";

		}
		myfile.close();

	}
	else
	{
		std::cout << "Unable to open file";


	}
}

//////////////////////////////////////////////
//////////////////////////////////////////////
//////////////////////////////////////////////

void play()
{


	std::cout << "the word is: "<< zeword.length() << " characters long"<< std::endl;
	std::cout << "how many guesses would u like to have?"<< std::endl;
	int guess_amount=0;
	std::cin >> guess_amount;

	std::vector<char> guessed_char;
	std::vector<char> vec_list;
	for(int i=0; (int)zeword.length()>i; i++)
	{
		vec_list.push_back('_');
	}

	bool play=true;
	char guess_char=0;
	char last_guessed_char=guess_char;
	int pos=0;

	while (play==true && guess_amount !=0)
	{
		std::cout<<"you have "<<guess_amount<<" guesses left";
		std::cout<<"\nenter your guess:";
		std::cin>>guess_char;
		std::cout<<"\n\n";
		for(int i=0; (int)zeword.length()>i; i++)
		{

			if(zeword[i] == guess_char)
			{

				vec_list[i]=guess_char;

			}
			std::cout<<vec_list[i];
		}

		std::cout<<"\n\n\n\n\n\n\n\n";

		if(zeword.find(guess_char) !=-1)
		{
			guess_amount--;
			std::cout<<"\nU found the letter '"<<guess_char<<"' in the word! \n";

			guessed_char.push_back(guess_char);
			std::cout<<"the letters u have guessed on is: ";
			for(int i=0; (int)guessed_char.size()>i; i++)
			{
				std::cout<<guessed_char[i]<<", ";
			}
			std::cout<<std::endl;
		}
		else
		{
			guess_amount--;
			guessed_char.push_back(guess_char);
			std::cout<<"the letters u have guessed on is: ";
			for(int i=0; (int)guessed_char.size()>i; i++)
			{
				std::cout<<guessed_char[i]<<", ";
			}
			std::cout<<std::endl;
		}
		int counter =0;
	
		for(int i=0; (int)zeword.length()>i; i++)
		{
		
			
			if(zeword[i]==vec_list[i])
			{
				counter++;
			}
			if(counter==zeword.length())
			{
				std::cout<<"u win! \n\n";
				play=false;
			}
			else if(guess_amount == 0)
			{
				std::cout<<"u lose! \n\n";
				play=false;
			}
	
		}
		
	}
}

//////////////////////////////////////////////
//////////////////////////////////////////////
//////////////////////////////////////////////

class Random
{
public:
	int show(int p)
	{
		srand( ( unsigned )time( 0 ) );
		int random_integer;

		random_integer = ( rand ( ) % p );
		return random_integer;
	}
};

int word()
{
	std::ifstream read ("example.txt");

	std::string line;
	std::vector < std::string > stuff;

	int counter = 0;
	while (getline(read, line, '\n'))
	{
		if(line.size()!=0)
		{
			stuff.push_back( line );
			counter++;
		}

	}

	read.close();

	Random a;

	if(counter==1)
	{
		zeword=stuff[0];
	}
	else
	{
		zeword=stuff[a.show(counter)];
	}
	return 0;
}