CG2.cpp

#include<stdio.h>
#include<graphics.h>
#include<conio.h>
#include<stdlib.h>
int main()
{
 int gd,gm,n,*x,i,k=0;
//window coordinates int wx1=220,wy1=140,wx2=420,wy2=140,wx3=420,wy3=340,wx4=220,wy4=340;
 int w[]={220,140,420,140,420,340,220,340,220,140};//array for drawing window
 detectgraph(&gd,&gm); 
 initgraph(&gd,&gm,"c:\\turboc3\\bgi"); //initializing graphics
 printf("Window:-");
 setcolor(RED); //red colored window
 drawpoly(5,w); //window drawn
 printf("Enter the no. of vertices of polygon: ");
 scanf("%d",&n);
 x = (int *)malloc(n*2+1);
 printf("Enter the coordinates of points:\n");
 k=0;
 for(i=0;i<n*2;i+=2) //reading vertices of polygon
 {
  printf("(x%d,y%d): ",k,k);
  scanf("%d,%d",&x[i],&x[i+1]);
  k++;
 }
 x[n*2]=x[0]; //assigning the coordinates of first vertex to last additional vertex for drawpoly method.
 x[n*2+1]=x[1];
 setcolor(WHITE);
 drawpoly(n+1,x);
 printf("\nPress a button to clip a polygon..");
 getch();

 setcolor(RED);
 drawpoly(5,w);
 setfillstyle(SOLID_FILL,BLACK);
 floodfill(2,2,RED);
// goto xy(1,1); //bringing cursor at starting position
 printf("\nThis is the clipped polygon..");
 getch();

 cleardevice();
 closegraph();
 return 0;
}