#include <iostream>

#include <cmath>

#include "opencv2/core/core.hpp"

#include <typeinfo>

using namespace std;

int main() {

// Vars.

int a[4] = {3,2,1,4};

int b[4] = {2,5,6,1};

// Pointers

int *p1, *p2;

int res(5);

// Init.

p1 = &a[0];

p2 = &b[0];

for(int i=0;i<4;i++) {

    res += (*(p1+i) - 2)*(*(p2+i) - 3);

}

cout << res << endl;    // -3

unsigned int p[4] = {3,1,2,4};

cv::Mat testMat = cv::Mat(1,4,CV_32S,p);

cout << testMat << endl; // Doesn't show the correct result

cout << testMat.at<unsigned int>(3) << endl; // Displays 4

//cv::Mat resDot = testMat*(testMat.t());

cv::Mat testMatTransp(testMat.t());

cout << testMatTransp << endl; // Doesn't display correct result

cv::MatExpr multRes = testMat.mul(testMat);

cout << "dot product result = " << multRes.c << endl;

cout << "continous blocks ? " << testMat.isContinuous() << endl;

return 0;

}