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I try to run this code, but I encounter the error as shown above . My first assumption is the linker file is incorrect. If my linker file is incorrect, then what should I change for the linker file?
My second assumption is I set a wrong path to the linker file. Currently, I set my path to C:\Apps\MinGW\bin. If my path is wrong, then what should I set my path to?
Not sure where you got the idea that the entry point should be called run. It should be called main, just rename it:
int main ()
{
....
}
That particular error message is a bit misleading to the untrained eye (explaining it goes further down the rabbit hole than I'd like to go) but that's essentially what that one means in this context.
I think, main is required for every CPP program.
Whenever you start compiling your program, the complier will find this function first and of course your program doesn't contain this.
So, try changing the function from run to main
Hope it works!
Change
int run()
{
}
to
int main()
{
}
Related
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So what I'm trying to do is simple; I want to write a function into the memory of another process and execute it. What I've done is gotten the size of the function and just used WriteProcessMemory to do this. I have successfully created a thread to run this function, confirmed using cheat engine's debugging features.
The function looks like so:
inline void __cdecl Test( )
{ }
Looks pretty simple. It shouldn't rely on anything that needs to be relocated, so it should work just fine. It is inline because I defined it in a header, if that is relevant. Although this function does NOTHING, this is what is happening in cheat engine:
It's odd that it's copying a string, but more so that it's calling a function? Since this random function call is happening, the program crashes because the address isn't relocated to match where functions are in the new process. So, my question is: why in the world is it calling a function and how can I stop this from happening?
So basically, debug mode was the cause for this issue and does not occur in release.
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Closed 7 years ago.
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edit: Sorry about that, I put in the wrong vector. And this is the non working code. The line 'stage_4.resize(20, vector(20, 0));' is giving me the error. 'stage_4.resize(20); works, but I couldn't get it to compile by adjusting both dimensions. Also, I forgot to mention I'm using Code::Blocks 13.12 and Mingw32-gcc.
I'm relatively new to c++ and have basically learned by reading tutorials on the internet so there are some pretty big gaps in my understanding of it. I've been trying to write a program using more classes to make things more streamlined and just started looking into using vectors. However, I've hit a bit of a snag in the combination of the two. I've created a class, and made a vector within it. It all compiles fine until I try to resize the vector as a 2 dimensional array within a function of the class. Here's the relevant code.
class stage{
public:
std::vector<int> stage_4;
int setup(int a){
switch (a){
case 1:
stage_4.resize(20, vector<int>(20, 0));
break;
}
}
}
When I just do stage_4.resize(20); It compiles no problem. But when I try to change both dimensions of the array, like in this code, it tells me "error: 'vector' was not declared in this scope". I'm not really sure what I'm doing wrong since, as I said, I'm fairly new to c++.
edit: I also tried to do stage_4.resize(20, std::vector(20,0));, but then it tells me "no matching function for call to 'std::vector::resize(int, std::vector)'"
It's std::vector.
vector lives in the std namespace.
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I have this weird problem all of a sudden. In the header, I've put two members like this:
std::vector<std::shared_ptr<Component>> m_test1;
std::vector<std::vector<std::shared_ptr<Component>>> m_test2;
std::vector<std::vector<std::shared_ptr<Component>>> m_componentsByType;
std::vector<std::vector<std::shared_ptr<Component>>> m_componentsByTypes;
Now, when I try to call method on these vectors, a weird thing happens:
m_test1.pop_back(); // OK
m_test2.pop_back(); // OK
m_componentsByType.pop_back(); // C2228
m_componentsByTypes.pop_back(); // OK
The error C2228 expands to:
error C2228: left of '.pop_back' must have class/struct/union
What could cause that m_componentsByType is the only one that doesn't work? Could this have something to do with VS2013? I've tried cleaning the project, but it doesn't seem to help. If I change a single character in the variable name and all the references, the code compiles and runs perfectly, but with that specific variable name, every reference causes a compiler error.
Forgot to mention that originally I had the exact same variable name, but with a different type. I changed the type and the error appeared.
Using /P (Preprocess to a File) preprocessor switch allows to generate text file, which contains the code handled by compiler. Reading this file (mostly searching in it, because this is huge file) allows to solve such kind of problems. For example, search for m_componentsByType in preprocessed file may give an idea, why compiler is not happy.
For reference: /P (Preprocess to a File) - http://msdn.microsoft.com/en-us/library/8z9z0bx6.aspx
In addition, IDE functions like "Go to definition" and "Find all references", and the same functions in Visual Assist (if used) can help.
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I'm pretty new to Xcode so I apologize if this is a very simple question. I'm trying to get the OpenCV Xcode sample code to compile and run, but I've been running into a lot of errors.The first problems were all about locating files so I changed the paths to fix this. Unfortunately after fixing those there's now another one that I don't know how to fix. The line of code:
CvCapture pCapture = 0;
produces an error, "Variable has incomplete type 'CvCapture'."
I've made sure that CcCapture is defined so I'm not sure what the problem is. I'm currently using Xcode 4.6. If you have any experience with Xcode or OpenCV and know how to fix this I would really appreciate it!
You probably want:
CvCapture* pCapture = 0;
because
typedef struct CvCapture CvCapture;
The structure CvCapture does not have public interface and is used only
as a parameter for video capturing functions.
http://www.ai.rug.nl/vakinformatie/pas/content/Highgui/opencvref_highgui.htm#highgui_video
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I'm running an ipad project on XCode. My project builds and runs successfully. But the logger messages (cout/printf statements) are not getting printed. It was working fine. I don't know what I did.
This is how the debugger screen looks when the project is running.
Help please..
Works after restarting Xcode. Should be a glitch.
Try to quit and restart the simulator.
If that still doesn't work then put a break point right before and after your print statements and see if your program is reaching that point.
If it doesn't reach the print statement, then put a break point in your viewDidLoad function and check if your program is running at all or not.