C / C++ / MFC

// TrimLeft() : trims all whitespace from the beginning of a string.
// Params: szOrigStr - string to trim
//         szOutputStr - output buffer
//         uBuffSize - buffer size, in characters
// Return: TRUE on success, FALSE if the buffer is too small
 
bool TrimLeft ( LPCTSTR szOrigStr, LPTSTR szOutputStr, UINT uBuffSize )
{
int i = 0;

  while ( isspace( szOrigStr[i] ))
    i++;

  if ( uBuffSize < (lstrlen(szOrigStr) - i + 1) )
    return false;

  lstrcpy ( szOutputStr, &szOrigStr[i] );

  return true;
}

{
TCHAR szOrigStr[] = _T("    foobar");
TCHAR szTrimmedStr[64];

  TrimLeft ( szOrigStr, szTrimmedStr, 64 );
}