Help ?

Help ?

• Caged

  ok , thx
  
  i don't understand that much of that text since i don't know a lot from headers and have no clue what MFC is and neither do i know what "Afx" headers are.
  Because i don't know a lot from programming i'm a 17 year old kid that has bought some book to program in C++
  
  i know i need <iostream> for my "cin" and "cout" functions
  <iomanip> for setw(...) , setprecision, and so on
  <fstream> to redirect your output i thought and
  using namespace std;  so i don't have to type the full name std::cout and so on
  
  really i don't know anything from the history and my english isn't that well either, but safe yourself the problem to explain, thx anyways ^^
  

• Mirek Smolinski

  I want to further point out that when the compiler searches for the #include "stdafx.h" it will ignore any line above it. 
  
  I explained a bit about precompiled headers under https://forums.microsoft.com/msdn/showpost.aspx postid=115695&siteid=1
  
  Brian
  
  PS To Microsoft: precompiled headers is a frequent usability issue for users migrating to Visual Studio or Visual Express C++ for the first time.  It might be a good area to focus on for the next version of VS!
  
  
  

  
  

• AlvaroReis

  Your decleration of main is the problem. main is a function, functions MUST have return types and as the compiler error says, c++ doesn't support the default int type, so give main a return type.
  For the two errors following, ie cout and cin are undeclared. You took out the using namespace std; so obviously it wouldn't find them.
  The thing with stdafx.h is you chose to have precompiled headers in the project. So if you don't want to worry about that, then switch off precompiled headers in your project.
  
  #include <iostream>

  #include <iomanip>

  using namespace std;

  int main()

  {

  cout << "Hello world!"; //Please note the direction of the arrows

  cin.get();

  }

  I used the express edition of C++ and this compiled with no problems. I had to make sure that precompiled headers were off as I said earlier. If you need to know how to disable precompiled headers it is easy.
  
  Solution explorer window -> right click on the project name and select properties-> expand C++ and then select precompiled headers -> set the top option, Create/Use Precompiled Header to Not Using Precompiled Headers.

  
  
  

• jjiffy

  "stdafx.h" came from a "standard" name for a user header that included "Afx" headers.  "AFX" (for "Advanced Framework") was what MFC was called before Microsoft acquired it.  Along the way, it made sense for Microsoft to precompile this header since MFC and Windows headers account for a lot of parsing time, so the name "stdafx.h" "stuck," even for projects that don't use MFC. 
  
  Brian
  
  
  

• bodhi147

  wow, thx a bunch guys :)
  
  me with my silly low understanding of the language, i thought because there was
  STDafx  that it was some kind of include that would replace the
  using namespace std;
  no wonder it never worked
  
  and the >> arrows, that's cause i made it in like 5 secs ^^ didn't think about it
  
  Thx a lot for your help, now i got a new C++ environment, and it WORKS too :D
  
  
  
  
  
  

• tom-taker

  I want to further point out that when the compiler searches for the #include "stdafx.h" it will ignore any line above it. 
  
  I explained a bit about precompiled headers under https://forums.microsoft.com/msdn/showpost.aspx postid=115695&siteid=1
  
  Brian
  
  PS To Microsoft: precompiled headers is a frequent usability issue when users migrating to Visual Studio or Visual Express C++ for the first time.  It might be a good area to focus on for the next version of VS!
  
  
  

  
  
• Help ?