Thread: Microsoft Visual C++ 8 Beta Express?

  1. #1
    Registered User
    Join Date
    Nov 2004

    Microsoft Visual C++ 8 Beta Express?

    Hello im fairly new to Visual c++/c++ etc... & i really like the IDE
    in the express beta. but i cant compile anything. for instance

    i'll create a new project->win32 console application
    Whenever i try to include header files such as "iostream.h"
    it will give me an error reading that it does not exist?
    why can i not include these files like in the regular MSVC++ 6 IDE?

    Thx for your time

  2. #2

    C++ and C headers differ. Keep in mind iostream is part of the C++ standard, iostream.h isn't. iostream is somewhat more restrictive than the older iostream.h. One would possibly avoid problems by careful use of namespaces, but it would be a lot smarter to stick with one or the other.

    You should avoid using the *.h version as much as possible, because some implementations have bugs in their *.h version. Moreover, some of them support non-standard code that is not portable, and fail to support some of the standard code of the STL.

    Furthermore, the *.h version puts everything in the global namespace. The extension-less version is more stable and it's more portable. It also places everything in the std namespace.

    In conclusion, iostream.h is an old style method of including std C++ headers, and in opposite to iostream you don't have to declare that you're using the std namespace.

    It is sometimes recommended to use:
    #include <iostream>
    using namespace std;
    - Stack Overflow
    Segmentation Fault: I am an error in which a running program attempts to access memory not allocated to it and core dumps with a segmentation violation error. This is often caused by improper usage of pointers, attempts to access a non-existent or read-only physical memory address, re-use of memory if freed within the same scope, de-referencing a null pointer, or (in C) inadvertently using a non-pointer variable as a pointer.

  3. #3
    Registered User
    Join Date
    Nov 2004
    Hello thx very much for that usefull information. it now works like a
    charm. also i have another question was the run application from the ide removed? cause i always have to locate the directory of my built exe file manually. thx again
    Last edited by goateh; 11-29-2004 at 08:48 PM.

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