C/C++ Programming Questions Not Worth Their Own Thread

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > C/C++ Programming Questions Not Worth Their Own Thread

Tomed2000: Jun 24, 2002

I've just started getting back into C++ and I've been coding small console apps with Visual C++ 2008 Express and I keep running into weird linking problems while building my projects.

Note that I usually have a header file (.h) and the definitions file (.cpp) for my class then a separate driver file for main. I was testing out program in the driver when I found out that I needed to modify the class. I do a few changes and then I go back to building the project and I get weird runtime errors. I step through the code and notice that the changes I made didn't take.

I try a bunch of stuff like closing/opening the program, rebuilding the project, etc but I finally delete all of the project files created by VC++, create a new project adding my file back in, and it finally works.

Is this a common problem or am I doing something wrong? Should I be using a difference compiler?

Tomed2000 fucked around with this message at 17:23 on Apr 9, 2009

# ¿ Apr 9, 2009 17:16

Adbot: ADBOT LOVES YOU

# ¿ Apr 29, 2024 18:13

Tomed2000: Jun 24, 2002

Alright.

Here are snippets of my files.

driver.cpp:

code:

#include "Comparator.h"
int main()
{
  Comparator comp1(1,2);
  return 0;
}

Comparator.h:

code:

class Comparator
{
public:
  Comparator(int topInput, int bottomInput);

private:
  int top;
  int bottom;
};

Comparator.cpp:

code:

#include "Comparator.h"

Comparator::Comparator(int topInput, int bottomInput)
{
  top = topInput;
  bottom = bottomInput;
}

Notice that I want to create a Comparator object comp1 with top=1 and bottom=2.

I find out later that I actually want to initialize top and bottom to be topInput-1 and topInput-2 so I do a small change to Comparator.cpp:

code:

#include "Comparator.h"

Comparator::Comparator(int topInput, int bottomInput)
{
  top = topInput-1;
  bottom = bottomInput-1;
}

I rebuild the entire project and run this code again. However, it still reads the constructor definition the same as before with top = topInput and bottom = bottomInput. Not until I created an entirely new project and rebuilt everything from scratch that I finally got it to recognize the change in Comparator.cpp.

Tomed2000 fucked around with this message at 17:46 on Apr 9, 2009

# ¿ Apr 9, 2009 17:42

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > C/C++ Programming Questions Not Worth Their Own Thread