C / C++ / MFC

1. Automatic cleanup (no memory leaks).
2. Improved consistency: you get the number of elements by calling size() on the vector, with new/delete it is up to the programmer to record the size elsewhere and get this information in sync with the buffer.
3. realloc-like functionality (vector::resize).
4. You can still have a pointer to raw memory if needed for compatibility with other functions (just pass &v[0]).

MyClass::MyClass()
{
m_pData = NULL ;
}

MyClass::~MyClass()
{
delete []m_pData ;
}

void MyClass::SetSize(int new_size)
{
ASSERT(new_size >= 1) ;
delete []m_pdata ;  // OK to delete NULL pointer
m_pData = NULL ;
m_pData = new char[new_size] ;
}

/*
 * Address resolution
 */

// First, try for a numeric IP address
ULONG uRemAddr = inet_addr(lpszHostAddress);

if (uRemAddr == INADDR_NONE) {
    // HostAddress isn't a dotted IP, so resolve it through DNS
    hostent* pHE = gethostbyname(lpszHostAddress);
    if (pHE == 0) {
    m_lastError = WSAGetLastError();
        return FALSE;
    }
    uRemAddr = *((ULONG*)pHE->h_addr_list[0]);
}