#include <iostream>

#include <stdio.h>

#include <opencv2/opencv.hpp>

using namespace cv;

using namespace std;

int main(int argc, char *argv[])

{

    CvCapture* cam0 = cvCaptureFromCAM();

    if(!cam0)

    {

        fprintf(stderr, "Could not initialize opening of Camera 0..\n");

        system("Pause");

        return -;

    }

    printf("cam0 initialized\n");

    cvNamedWindow("Camera 0",CV_WINDOW_AUTOSIZE); //create a window called "Camera 0"

    while ()

    {

        IplImage *cam0Frame = cvQueryFrame(cam0);

        if (cam0Frame) {

            cvShowImage("Camera 0", cam0Frame);

        }

        if (cvWaitKey() == ) //wait for 'Esc' key press for 30ms. If 'Esc' key is pressed, break loop

        {

            cout << "Esc key is pressed by user" << endl;

            break;

        }

    }

    cvReleaseCapture(&cam0);

    cvDestroyWindow("Camera 0");

    return ;

}