Draw Polygons in Graphics.h using drawpoly() & fillpoly() - Linux Mint - Libgraph - Graphics & Multimedia Lab - C++ Program

Draw Polygons in Graphics.h using drawpoly() & fillpoly() 

- Linux Mint - Libgraph - Graphics & Multimedia Lab - C++ Program

• drawpoly( number_of_vertices+1  ,  sequence_of_polygonpoints ) - draw polygon
• fillpoly( number_of_vertices+1  ,  sequence_of_polygonpoints ) - draw & fill polygon 

Source code:

#include<graphics.h>
using namespace std;

int main()
{
    int gd=DETECT, gm;
    int triangle[8]={20,150, 60,70, 110,150, 20,150};
    int rect[10]={150,60, 280,60, 280,150, 150,150, 150,60};
    int pentagon[12]={340,150, 320,110, 360,70, 400,110, 380,150, 340,150};
    int hexagon[14] ={ 360,260, 340,240, 360,220, 400,220, 420,240, 400,260, 360,260}; 
    int octagon[18]={450,150, 430,120, 430,100, 450,70, 500,70, 520,100, 520,120, 500,150, 450,150};
    int poly1[10]={50,400, 50,300, 150,400, 250,300, 250,400 };
    int poly2[12]={350,430, 350,390, 430,350, 350,310, 300,410, 350,430 };

    initgraph(&gd, &gm,NULL);
    
    outtextxy(150,15, "Polygon Drawing in Graphics.h using drawpoly() & fillpoly().");      
    
     
    drawpoly(4,triangle);  
    outtextxy(30,160, "Triangle");
        
    drawpoly(5,rect);  
    outtextxy(190, 160, "Rectangle");   
    drawpoly(6,pentagon);  
    outtextxy(330, 160, "Pentagon");
    drawpoly(9,octagon);
    outtextxy(450, 160, "Octagon");
    

    fillpoly(7,hexagon);
    outtextxy(362, 262, "Hexagon");     

    drawpoly(5,poly1);
    drawpoly(6,poly2);
    outtextxy(400, 400, "Polygon");
  
    getch();
    closegraph();
    return 0;
}
  

Output:

nn@linuxmint ~ $ g++ g4.cpp -lgraph
g4.cpp: In function ‘int main()’:
g4.cpp:18: warning: deprecated conversion from string constant to ‘char*’
g4.cpp:22: warning: deprecated conversion from string constant to ‘char*’
g4.cpp:25: warning: deprecated conversion from string constant to ‘char*’
g4.cpp:27: warning: deprecated conversion from string constant to ‘char*’
g4.cpp:29: warning: deprecated conversion from string constant to ‘char*’
g4.cpp:33: warning: deprecated conversion from string constant to ‘char*’
g4.cpp:37: warning: deprecated conversion from string constant to ‘char*’
nn@linuxmint ~ $ ./a.out
a.out: ../../src/xcb_io.c:249: process_responses: Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed.
Aborted
nn@linuxmint ~ $