#include <iostream>
#include <fstream>
using namespace std;
 
void dispJoke ( fstream& );
void dispPunchLine ( fstream& );
 
int main()
{
	fstream joke ( "joke.txt", ios::in );
	fstream punch ( "punchline.txt", ios::in );
 
	if ( !joke )
	{
		cout << "Erorr opening file, joke.txt";
		return 0;
	}
	else if ( !punch )
	{
		cout << "Erorr opening file, punchline.txt";
		return 0;
	}
 
	dispJoke(joke);
	system("pause");
	dispPunchLine(punch);
 
	joke.close();
	punch.close();
 
	return 0;
}
void dispJoke ( fstream& joke )
{
	char data[256];
	joke.getline ( data, 256 );
	while ( !joke.eof() )
	{
		cout << data << endl;
		joke.getline ( data, 256 );
	}
}
void dispPunchLine ( fstream& punch )
{
	char data[256];
 
	punch.seekg(-35L, ios::end );
	punch.getline ( data, 256, '.' );
	while ( !punch.eof() )
	{
		cout << data << endl;
		punch.getline ( data, 256, '.' );
	}
}

while( joke.getline(data, 256) )
{
  // blabla
}