C / C++ / MFC

char ID::SetID(char *pSID)
{
    strcpy(&M_ID, pSID);
    return 0;
}

char ID::SetID(char *pSID, int isize = 10)
{
//default size of id is 10 chars, or what ever you want
    memcpy(&M_ID, pSID, isize);
    return 0;
}

ifstream fin;
fin.exceptions(ifstream::eofbit|ifstream::failbit|ifstream::badbit);
try{
  fin.open(FilePath, ios::binary);
  fin.read(var1, sizeof(int));
  fin.read(var2, sizeof(int));
  ...
}
catch(ifstream::failure& e){
  // something bad happened
}
fin.close();

TCHAR pszBuf[128] = "";// Message buffer

TCHAR pszBuf[1024] = "";// Message buffer

//------------------------//
// Convert BSTR to char * //
//------------------------//
inline char* ConvertBSTRToString(BSTR pSrc)
{
	if(!pSrc) return NULL;
	
	DWORD cb,cwch = ::SysStringLen(pSrc);//convert even embeded NULL
	
	char *szOut = NULL;
	
	if(cb = ::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch + 1, NULL, 0, 0, 0))
	{
		szOut = new char[cb];
		if(szOut)
		{
			szOut[cb - 1]  = '\0';
			
			if(!::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch + 1, szOut, cb, 0, 0))
			{
				delete []szOut;//clean up if failed;
				szOut = NULL;
			}
		}
	}

	return szOut;
};

* POPEN.C: This program uses _popen and _pclose to receive a 
 * stream of text from a system process.
 */

#include <stdio.h>
#include <stdlib.h>

void main( void )
{

   char   psBuffer[128];
   FILE   *chkdsk;

        /* Run DIR so that it writes its output to a pipe. Open this
    * pipe with read text attribute so that we can read it 
         * like a text file. 
    */
   if( (chkdsk = _popen( "dir *.c /on /p", "rt" )) == NULL )
      exit( 1 );

   /* Read pipe until end of file. End of file indicates that 
    * CHKDSK closed its standard out (probably meaning it 
         * terminated).
    */
   while( !feof( chkdsk ) )
   {
      if( fgets( psBuffer, 128, chkdsk ) != NULL )
         printf( psBuffer );
   }

   /* Close pipe and print return value of CHKDSK. */
   printf( "\nProcess returned %d\n", _pclose( chkdsk ) );
}