C / C++ / MFC

#include <iostream>
#include <conio.h>
#include<string.h>
#include<fstream>
#include <sstream>
#include<wchar.h>
 
using namespace std;
 
int main( void )
{
 
    char ch;
    wchar_t c;
    wstringstream o;
    wstring wstrIn;
    const char* pFile="test.txt";
    FILE* in;
    in=fopen (pFile,"rb");
    if(!in)
    {
        cout<<"Error."<<endl;
        exit(0);
    }
    int i=0;
    int len=sizeof(wchar_t);
    c=fgetwc(in);
    while(c!=0xFFFF)
    {
        c=fgetwc(in);
         o<<c;        
    }
    wstrIn=o.str();
     
    fclose(in);
    getch();
}

`wstringstream' undeclared (first use this function)

#include "iostream"

int main(int argc, char* argv[])
{
    std::cout << "utf-8 string in cmd";
    return 0;
}

<pre lang="c++"><code>
#include "iostream"

int main(int argc, char* argv[])
{
    std::cout << "سلام";
    return 0;
}</code>

Via Bloodshed Dev-C++