Show live webcam by OpenCV c++.

open_webcam.cpp

#include <opencv2/opencv.hpp>
#include <iostream>
#include <stdio.h>

using namespace std;
using namespace cv;

int main(int argv, char** argc)
{
  Mat frame;
  
  VideoCapture cap;
  cap.open(0);
  
  if(! cap.isOpendf())
  {
    cerr << "Unable to open Camera\n";
    return -1;
  }
  
  while(1)
  {
    cap.read(frame);
    
    imshow("LIVE", frame);
    if(waitkey(1) >=0)
      break;
  }
  return 0;
}