Ifstream is not working - c++

Question

#include <fstream>
#include <string>
#include <iostream>
#include "Gyvūnas.h"
#include "Maistas.h"
using namespace std;
//-------------------------------------------------------
const char CFm[] = "Maistas.txt";
const char CFg[] = "Gyvūnai.txt";
const int CMax = 100;
//-------------------------------------------------------
//--------------------------------------------------------
void Skaityti (const char CFm[], Maistas M[], int & n);
void Skaityti2 (Gyvūnas G[], int & kg);
//----------------------------------------------------------
int main(){
setlocale (LC_ALL , "Lithuanian");
Maistas M[CMax];
Gyvūnas G[CMax];
int n;
int kg;
Skaityti (CFm, M, n);
Skaityti2 (G, kg);
cout << M[1].ImtiMetus() << " " << n << endl;
system ("PAUSE");
return 0;
}
//----------------------------------------------------------
void Skaityti (const char CFm[], Maistas M[], int & n)
{
string produktas;
double kiekis;
int metai;
int mėnuo;
int diena;
ifstream fd(CFm);
fd >> n;
for (int i = 0 ; i<=n ; i++){
fd >> produktas >> kiekis >> metai >> mėnuo >> diena;
M[i].Dėti(produktas, kiekis, metai, mėnuo, diena);
}
fd.clear ();
fd.close();
}
void Skaityti2 (Gyvūnas G[], int & kg)
{
int narvas;
string pavadinimas;
int skaičius;
int produktas;
int kiekis;
int n;
ifstream fd(CFg);
fd >> n;
for (int i = 0 ; i<=kg ; i++){
fd >> narvas >> pavadinimas >> skaičius >> produktas >> kiekis;
G[i].Dėti(narvas, pavadinimas, skaičius, produktas, kiekis);
}
kg = n;
fd.close();
}
When I set breakpoints it shows that in this part ifstream cannot read variable n from file:
ifstream fd(CFm);
fd >> n;
for (int i = 0 ; i<=n ; i++){
fd >> produktas >> kiekis >> metai >> mėnuo >> diena;
M[i].Dėti(produktas, kiekis, metai, mėnuo, diena);
}
fd.clear ();
fd.close();
Errors are:
std::basic_ios
Filebuffer {_Set_eback=0xcccccccc _Set_egptr=0xcccccccc ...} std::basic_filebuf >

Answer 1

What you have are not errors, just values of the pointers. It seems that you can't open CFm file. Please confirm if you really have Maistas.txt in the working directory (for test, you could just move it to C:\Maistas.txt and then pass "C:\\Maistas.txt" as absolute file path.
Also, there's a way to check if the ifstream is properly opened - you can do that by checking failbit:
ifstream fd(CFm);
if(!fd.good())
{
cerr << "Could not open the file!" << endl;
return;
}

Answer 2

Try rename Gyvūnai.txt to Gyvunai.txt.
Using non-ascii symbols as variable-names and function-names is bad practice (Dėti,skaičius), though Visual Studio allow this, using string literals with non-ascii symbols is even worse - actual char code will depend on encoding of source file and compiler code-page settings. Compiler can treat sources as CP1251 when it's actually UTF-8 and have two chars for ū.