c program to check position of point in a circle

Q:Write a c program to check whether a given point is outside, inside or on the circle when radius and coordinates of points are input

#include

#include

void main()

{

int x,y,r,d;

clrscr();

printf("enter x co ordinate");

scanf("%d",&x);

printf("enter y co ordinate");

scanf("%d",&y);

printf("enter radius");

scanf("%d",&r);

d=(x*x)+(y*y);

r=r*r;

if(d==r)

{

printf("point is on the circle");

}

else if(d>r)

{

printf("point is outside the circle");

}

else if(d

{

printf("point is inside the circle");

}

getch();

}