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Code:
typedef struct 
{
	char id[4];
	long dirofs;
	long dirlen;
} dpackheader_t;

typedef struct 
{
	char name[128];

	long filepos;
	long filelen;
} packfile_t;

void FS_InitFiles ( void )
{
	datafile_t pak = datafile_t();
	pak.filename = "test.pak";
	pak.paknum = 1;

	ifstream inputFile( pak.filename,  ios::in | ios::binary );
	inputFile.seekg( 0, ios::end );
	long fileSize = inputFile.tellg();
	inputFile.seekg( 0, ios::beg );
	
	byte *pBuffer = new byte[fileSize];
	inputFile.read( (char*) pBuffer, fileSize );
	//inputFile.close();

	//pBuffer[fileSize]='\0'; 

	const byte *pPtr = pBuffer;
	dpackheader_t *pHeader = ( dpackheader_t* )pPtr;
	pBuffer[sizeof(pHeader->id)]='\0';
	pPtr += sizeof( dpackheader_t );

	pak.header = dpackheader_t();
   // pak.header.id = pHeader->id;//br.ReadChars(4);
	strcpy(pak.header.id, pHeader->id);
	pak.header.dirofs = pHeader->dirofs; //br.ReadInt32();
	pak.header.dirlen = pHeader->dirlen; //br.ReadInt32();

	if ( strncmp( pHeader->id, "PACK", 4 ) != 0 )
	{
		Com_Printf("It isn't .PAK");
		return;
	}

	Com_Printf("id: %s dirofs: %i dirlen: %i\n", pak.header.id, pak.header.dirofs, pak.header.dirlen);

	
	// ================== //
	pak.files = new packfile_t[pak.header.dirlen / 64];

	inputFile.seekg(pak.header.dirofs, ios::beg);
	pBuffer = new byte[pak.header.dirofs];
	inputFile.read( (char*) pBuffer, fileSize );
	
	byte *pPtrs = pBuffer;
	//pBuffer[sizeof(pHeaders->name)]='\0';
	pPtrs += sizeof( packfile_t );

	// temp log
	fstream myfile;
	myfile.open ("t.txt");

	//pPtrs -= pHeaders->filelen;
	// NOTE: packfile_t is s*, use in sizeof

	int k;
	for(k = 0; k < pak.header.dirlen / 64; k ++)
	{
		packfile_t *s = (packfile_t*)pPtrs;
		pPtrs += (pak.header.dirlen/64); //sizeof( packfile_t );

		pPtrs -= (sizeof(s->filelen) - strlen ( s->name ) - sizeof(s->filepos));
		pPtrs += sizeof(s);

		pBuffer[sizeof(s->name)]='\0';	
		
		Com_Printf("File #%i - filepos: %i filelen - %i filename: %s\n", k, s->filepos, s->filelen, s->name);

		pPtrs += sizeof( s );

		myfile << str("%s\n", s->name);

	}

	delete[] pBuffer;
	myfile.close();
	inputFile.close();
}