I'm having a trouble in my Visual Studio C++ Project.
At the moment in my main.cpp I can print using:
#include <iostream>
using namespace std;
I have tried to print inside a different file Party.cpp
using the same methods in the main.cpp, but I have noticed that including <iostream> gives me errors like :
Error 4 error C2059: syntax error : ')'
in tmmintrin.h line 90.
I have no idea what is tmmintrin.h , it is not on my project and my project can not be compiled because of that reason.
If anyone have faced this problem / know how to solve I would like to get helped.
The problem is solved it was
#include "Party.h"
using namespace std;
#include <iostream>
and i changed the order to
include <iostream>
using namespace std;
#include "Party.h"
Related
I'm creating windows console app that has many pages (split in files). I'm facing a problem when executing the program and Visual Studio throws 'startpage' identifier not found error (startpage is the function and the file name is startpage.h)
I've tried using:
external int startpage(); and
int startpage();.
I've tried changing only the function name too (so the file and function don't use the same name).
I have no idea why this is happening. Other files with different functions are working. The file "startpage.h" uses two functions defined in other files, and those are not throwing any errors.
#include "include/startpage.h"
#include <iostream>
#include <conio.h>
#include "include/concol.h"
#include "pch.h"
#include <iostream>
using namespace std;
int main()
{
startpage();
}
```
Here is the error:
Error code: C3861: 'startpage' identifier not found
Move #include "pch.h" to the top. The compiler ignores everything above the inclusion of precompiled header. – Igor Tandetnik
This worked!
Thank you so much guys!
I have a native library for an Android app. When I load the entire C++ project in Android Studio, some errors are thrown by the IDE saying:
cannot resolve namespace std and cannot find any C++ headers.
#include <fstream>
#include <iostream>
#include <map>
using namespace std;
For all of the above code, fstream, iostream, etc is being marked red and shows cannot find. Any workaround to fix the above issue?
I have been using OpenCV 3.0 that are combined with the extra modules using CMake 3.5. I am using Visual Studio 2012 32bit as my IDE.
However, i cannot seem to use both KeyLine and also BinaryDescriptor. They give me error which is "identifier KeyLine is undefined". I have set the Paths and also library setting.
#include <opencv2/opencv.hpp>
#include <opencv2/line_descriptor.hpp>
#include <iostream>
using namespace std;
using namespace cv;
int main( void ) {
Ptr<BinaryDescriptor> bd = BinaryDescriptor::createBinaryDescriptor();// this line gives error
vector<KeyLine> lines; // same as this
}
I have tried the other header, for instance the tracking.hpp. I am able to define:
Ptr<Tracker> tkr;
Without having the Tracker giving me error.
Anyone know if the error is caused during CMake process or i miss out something?
I just had the same problem, and stumbled upon your question.
The answer I just found out is you have to add,
using namespace line_descriptor;
at the top along with cv namespace.Got this hint from line_descriptor.hpp source code.
I have been using Visual Studio and I think I must have messed with some setting. I can't include basic things like <iostream>. How can I fix this?
#include <iostream> // for standard I/O
#include <string> // for strings
#include <iomanip> // for controlling float print precision
#include <sstream> // string to number conversion
#include <opencv2/imgproc/imgproc.hpp> // Gaussian Blur
#include <opencv2/core/core.hpp> // Basic OpenCV structures (cv::Mat, Scalar)
#include <opencv2/highgui/highgui.hpp> // OpenCV window I/O
using namespace std;
using namespace cv;
All the above lines are in red squiggle below. My guess is while trying to configure Visual Studio to use OpenCv, I messed with some setting.
More than likely, you forgot to add 'using namespace std' as pretty much nothing in iostream is really useful without it. If you are getting 'cant find ...', then you have a setup problem and should reinstall Visual Studio because the headers were not properly placed.
Hope this helps, feel free to post your code and I can tell you for sure what the problem is, but that is the most likely of them.
I'm having a problem with Boost libraries, particularly filesystem when used with OpenCV. Apparently the problem is similar to the one described in Conflict between Boost, OpenCV and Eigen libraries?. In that particular case the problem was solved by preceding the "using namespace" statement with all the "#include" statements. In my case, this was done in this way from the beginning.
I'm using OpenCV 2.4.3 and Boost 1.48 (already tried with 1.52 having the same exact problem). The programming is being done in Windows 7 (64 bit) using Eclipse CPP plugin and MinGW.
When trying to build my program I get the following errors:
C:\Boost\boost_1_48_0/boost/type_traits/decay.hpp:28:66: error: 'cvflann::<anonymous enum>' is/uses anonymous type
C:\Boost\boost_1_48_0/boost/type_traits/decay.hpp:28:66: error: trying to instantiate 'template<class T> struct boost::remove_reference'
C:\Boost\boost_1_48_0/boost/type_traits/decay.hpp:38:17: error: 'cvflann::<anonymous enum>' is/uses anonymous type
C:\Boost\boost_1_48_0/boost/type_traits/decay.hpp:38:17: error: trying to instantiate 'template<class T> struct boost::remove_reference'
In my case the using namespace statements are after the include statements:
#include <opencv2/opencv.hpp>
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <vector>
#include <boost/filesystem.hpp>
#include <boost/multi_index_container.hpp>
using namespace std;
using namespace cv;
using namespace boost::filesystem;
Any idea in how to solve this problem will be greatly appreciated :D:D:D
Regards,
Luis
I suggest you remove the section:
using namespace std;
using namespace cv;
using namespace boost::filesystem;
and use the scope operator :: in code.
Here's an example of these 2 different modes.