teraz diała

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <string>
int main() {

    std::string tabprefixy[ 100 ];
    std::string tabfixy[ 100 ];
    std::string tabsufixy[ 100 ];

   std::fstream prefixy;
   prefixy.open( "prefixy", std::ios::in ); // imie
    std::fstream fixy;
    fixy.open( "fixy", std::ios::in ); // rasa
    std::fstream sufixy;
    sufixy.open( "sufixy", std::ios::in ); // rola

    std::string napis;
    std::string temp;

    int lp = 0;
    while( !prefixy.eof() )
    {
        getline( prefixy, napis );
        tabprefixy[ lp ] = napis;
        std::cout << napis << std::endl;
        lp++;
    }
    prefixy.close();

    std::cout << "fixy\n";
    int lf = 0;
    while( !fixy.eof() )
    {
        getline( fixy, napis );
        tabfixy[ lf ] = napis;
        std::cout << napis << std::endl;
        lf++;
    }
    fixy.close();

    std::cout << "suffixy\n";
    int ls = 0;
    while( !sufixy.eof() )
    {
        getline( sufixy, napis );
        tabsufixy[ ls ] = napis;
        std::cout << napis << std::endl;
        ls++;
    }
    sufixy.close();

   srand( time( NULL ) );
   int rp = rand() % lp;
   int rf = rand() % lf;
   int rs = rand() % ls;
  std::cout<<"output:\n";
   std::cout << tabprefixy[ rp ] << tabfixy[ rf ] << tabsufixy[ rs ]<<std::endl;

    return 0;
}