Unhandled exception , access violation in opencv cvCaptureFromCAM using Visual c++ - visual-c++

Question

I am trying to build a program in Opencv that captures a video and saves it to a file. However, after repeated efforts I continue to get this error : Unhandled exception at 0x201e8efb in basic.exe: 0xC0000005 Access violation, where basic.cpp is my file name.
The same occurs when trying to capture an image.
I have already tried changing cvCaptureFromCAM parameters to CV_CAP_ANY/0/-1/-2/1/2..but none of these worked out.My webcam, works perfectly well for others applications and i have tested it online.
Any help would be greatly appreciated .Thanks in advance.
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include "C:\opencv\build\include\opencv2\core\core.hpp"
#include "C:\opencv\build\include\opencv2\highgui\highgui.hpp"
#include <iostream>
using namespace cv;
using namespace std;
void main( ){
CvCapture *capture = cvCaptureFromCAM( 0 );
int width = ( int )cvGetCaptureProperty( capture, CV_CAP_PROP_FRAME_WIDTH );
int height = ( int )cvGetCaptureProperty( capture, CV_CAP_PROP_FRAME_HEIGHT );
CvVideoWriter *writer = cvCreateVideoWriter( "myCamCapture.avi", -1, 30, cvSize( width, height ) );
cvNamedWindow("camopen", CV_WINDOW_AUTOSIZE);
IplImage *frame = 0;
while( 1 )
{
frame = cvQueryFrame( capture );
cvShowImage("d",frame);
cvWriteFrame( writer, frame );
char c = cvWaitKey( 30 );
if( c == 27 ) break;
}
}

Answer 1

please, since you're a beginner, don't start with the deprecated c-api, use the c++ one instead.
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/core/core.hpp"
using namespace cv;
int main()
{
VideoCapture cap(0);
while( cap.isOpened() )
{
Mat frame;
if ( ! cap.read(frame) )
break;
imshow("lalala",frame);
int k = waitKey(10);
if ( k==27 )
break;
}
return 0;
}
regarding your error: please triple-check the libs you're linking (compiler version, debug/release, 32/64bit). you're not allowed to mix different settings there