#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>                 /* exit() */
#include <sys/ioctl.h>              /* ioctl() */
#include <libv4lconvert.h>
#include <iostream>
using namespace std;

int main(int argc, char * argv[])
{
    int fd = open("/dev/video0", O_RDWR);
    if (fd < 0)
    {
        cerr << "bad fd" << endl;
        exit(1);
    }

    struct v4l2_capability cap;
    ioctl(fd, VIDIOC_QUERYCAP, &cap);

    close(fd);
}