C Program to Draw Indian National Flag in Computer Graphics.C

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#include<stdio.h>
#include<graphics.h>
#include<math.h>

int main()
{
int gd,gm;
int r,i,a,b,x,y;
float PI=3.14;

detectgraph(&gd,&gm);
initgraph(&gd,&gm,"C:\\TURBOC3\\BGI");

//draw the top rectangle and color it

setcolor(RED);
rectangle(100,100,450,150);
setfillstyle(SOLID_FILL,RED);
floodfill(101,101,RED);

//draw the middle rectangle and color it

setcolor(WHITE);
rectangle(100,150,450,200);
setfillstyle(SOLID_FILL,WHITE);
floodfill(101,151,WHITE);

//draw the bottom rectangle and color it

setcolor(GREEN);
rectangle(100,200,450,250);
setfillstyle(SOLID_FILL,GREEN);
floodfill(101,201,GREEN);

//draw the circle

a=275;  //center
b=175;  //center
r=25;   //radius
setcolor(BLUE);
circle(a,b,r);

//spokes

for(i=0;i<=360;i=i+15)
{
    x=r*cos(i*PI/180);
    y=r*sin(i*PI/180);
    line(a,b,a+x,b-y);
}

getch();
closegraph();
return 0;
}
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