Thread: Deleting an object if the constructor failed.

Hi guys, I want to ask you about how to delete an object if its constructor failed to initialize one of its members. I tried it like below but failed:

Code:

B* A:CreateB(std::string paramStr)
{
    B* pB= NULL;
    try
    {
         pB = new pB (paramStr);
    }
    catch (int result)
    {
         if (result == OK) // OK == 1
         {
                m_VectorB.push_back(pB);
         }
          else if (result == FAILED)
         {
                delete pB;
                pB = NULL;
         }
    }
    return pB;
}

B::B(std::string paramStr)
{
    int result = initMembers (paramStr); //returns OK / 1 if successful or FAILED / 0 if failed
    throw result ;
}

Now, FYI, I have never ever ever used exception in my entire life as a programmer. All my error handlings are either by return value or assertion. I know that it is not a good habit but I still don't have a good understanding about it. So, how can I solve this problem? Thanks in advance.