Question

error C2784: ‘std::basic_ostream<_Elem,_Traits> &std::operator <<(std::basic_ostream<_Elem,_Traits> &,const std::basic_string<_Elem,_Traits,_Alloc> &)’ : >could not deduce template argument for ‘std::basic_ostream<_Elem,_Traits> &’ from >’std::string’ c:\documents and settings\rcs\my documents\visual studio 2010\projects…

the Code is :

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include "Pacient.h"

using namespace std;

void ruajKartele(Pacient patient)
{
    int mosha;
    char gjinia;
    string foo=patient.getEmer();
    string skedar=foo;
    ofstream file;
    file.open(skedar, ios::app);
    skedar<<foo+"\n";
    mosha=patient.getMosha();
    gjinia=patient.getGjinia();
    foo=patient.getDiagnoza();
    skedar<<mosha<<"\n"<<gjinia<<"\n"<<foo<<"\n";
    foo=patient.getPrognoza();
    skedar<<foo+"\n";
    skedar<<"-----\n"; //5
    skedar.close();
}
int _tmain(int argc, _TCHAR* argv[])
{
    return 0;
}
//Pacient structure:
    #include <string>
class Pacient
{
protected:
    std::string emer;
    int mosha;
    char gjinia;
    std::string diagnoza;
    std::string prognoza;

public:
    Pacient(void);
~Pacient(void);
void setEmer(std::string);
void setMosha (int);
void setGjinia(char);
void setDiagnoza(std::string);
void setPrognoza(std::string);
std::string getEmer(void);
int getMosha(void);
char getGjinia(void);
std::string getDiagnoza(void);
std::string getPrognoza(void);
};

Answer 1

string skedar=foo;
ofstream file;
file.open(skedar, ios::app);
skedar<<foo+"\n";

skedar is a std::string, that (apparently) represents a path. file is an ofstream. If you want to write to that stream, you can’t skedar << "whatever";, you need to output to the ofstream:

file << foo << "\n";

Same for skedar.close();: it’s the file you want to close, not the string that represents its filename.