Hjælp - meget nemt - har desværre ingen up !

Kode 

#include <iostream.h>
#include <fstream.h>
#include <string>

int main(void)
{
    std::string txt = ".txt";
    std::string nr = "2";
    std::string sti = "C:/Documents and  Settings/Da9L/Skrivebord/newb";

    sti = sti + nr;
    sti = sti + txt;
    
    
    ofstream shit_heh(sti.c_str());
    
    shit_heh << "du er sod.." << endl;
    shit_heh << " tekst 2.. ..  " << endl;
    shit_heh << " tekst 3.." << endl;
}

Kode 

#include <iostream>
#include <sstream>
#include <fstream>
#include <string>

using namespace std;

template <typename T>
std::string ToString(T aValue)
{
   std::stringstream ss;
   ss << aValue;
   return ss.str();
}

int main(void)
{
    int nr = 2;
    string sti = string("C:/Documents and Settings/Da9L/Skrivebord/newb") +  ToString(nr) + ".txt";
    cout << sti << endl;
}