compile visual studio c++ online

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#include <iostream>
#include <fstream>
#include <strstream> // deprecated
#include <cctype>
#include <locale>
#include <vector>
#include <string>
#include <ctime>
#include <windows.h>
#include <cassert>
#include <cstdio>

int main()
{
    const char* const path = "test.txt" ;

{
        std::ofstream file(path) ;
        for( int i = 0 ; i < 1000 ; ++i ) file << std::ifstream( __FILE__ ).rdbuf() ;
    }

const auto start = std::clock() ; // *** start timer

// using namespace boost::interprocess ;
    // file_mapping mapping( path, read_only ) ;
    // http://msdn.microsoft.com/en-us/library/windows/desktop/aa363858(v=vs.85).aspx
    HANDLE file = CreateFile( path, GENERIC_READ, 0, 0, OPEN_EXISTING,
                              FILE_FLAG_SEQUENTIAL_SCAN | FILE_FLAG_DELETE_ON_CLOSE, 0 ) ;
    assert( file != INVALID_HANDLE_VALUE ) ;

// mapped_region region( mapping, read_only) ;
    // http://msdn.microsoft.com/en-us/library/windows/desktop/aa366537(v=vs.85).aspx
    HANDLE mapping = CreateFileMapping( file, 0, PAGE_READONLY, 0, 0, 0 ) ;
    assert(mapping) ;
    // http://msdn.microsoft.com/en-us/library/windows/desktop/aa366761(v=vs.85).aspx
    const char* const address = static_cast<  const char* >( MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 ) ) ;
    assert(address) ;

// const std::size_t nbytes  = region.get_size() ;
    // http://msdn.microsoft.com/en-us/library/windows/desktop/aa364955(v=vs.85).aspx
    const DWORD nbytes = GetFileSize( file, 0 ) ;

std::istrstream stm( address, nbytes ) ; // deprecated

// This ctype facet classifies all punctuations too as whitespace
    struct punct_too_is_ws : std::ctype<char>
    {
        static const mask* classification_table()
        {
            // start with the classic table ( C locale's table )
            static std::vector<mask> table( classic_table(),  classic_table() + table_size ) ;

// all punctuation is to be treated as whitespace
            for( std::size_t i = 0 ; i < table_size ; ++i ) if( std::ispunct(i) ) table[i] = space ;

return std::addressof( table.front() ) ;
        }

// do not delete table, initial reference count == 0
        punct_too_is_ws() : std::ctype<char>( classification_table() ) {}
    };

stm.imbue( std::locale( stm.getloc(), new punct_too_is_ws ) ) ;

std::string str ;
    std::size_t cnt = 0 ;
    while( stm >> str ) ++cnt ;

const auto end = std::clock() ; // *** end timer

std::cout << cnt << " words were read in " << double(end-start)*1000 / CLOCKS_PER_SEC << " milliseconds.\n" ;

// UnmapViewOfFile, CloseHandle, CloseHandle ...
}

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Compilation time: 2.25 sec, absolute running time: 0.28 sec, absolute service time: 2.54 sec