OpenCV C++ Code for drawing a Line

Syntax:
C++:void line(Mat& img, Point pt1, Point pt2, const Scalar& color, int thickness=1, int lineType=8, int shift=0)

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Parameters:
img – Image.
pt1 – First point of the line segment.
pt2 – Second point of the line segment.
color – Line color.
thickness – Line thickness.
lineType – Type of the line:
                 8 (or omitted) - 8-connected line.
                 4 - 4-connected line.
                 CV_AA - antialiased line.
shift – Number of fractional bits in the point coordinates.

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//Opencv Code for drawing a Line
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
using namespace cv;
  
int main( )
{    
  // Create black empty images
  Mat image = Mat::zeros( 400, 400, CV_8UC3 );
    
  // Draw a line 
  line( image, Point( 15, 20 ), Point( 70, 50), Scalar( 110, 220, 0 ),  2, 8 );
  imshow("Image",image);
  
  waitKey( 0 );
  return(0);
}