#include <stdio.h>
#include <iostream>
#include <opencv2/core.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/videoio/videoio_c.h>

using namespace cv;
using namespace std;

int main(int argv, char** argc)
{
    Mat frame;
    VideoCapture cap(0);
   
    if (!cap.isOpened()){
        cerr << "ERROR! Unable to open camera\n";
        return -1;
    }
    cout << "Start grabbing" << endl
        << "Press any key to terminate" << endl;

    for (;;)
    {
        cap.read(frame);
        if (frame.empty()){
            cerr << "ERROR! Blank frame grabbed \n";
            break;
            }
        imshow("Live", frame);
        if (waitKey (5) >= 0)
            break;
    }
    return 0;
}