#include<stdio.h>
#include<math.h>
#include<stdlib.h>
int main(){
	float   x,y ;
    float  x1, y1  ;
    float  r ;
    printf("enter x1 value ") ;
    scanf("%f", &x1) ;
    printf("enter y1 value ") ;
    scanf("%f", &y1 ) ;
    printf("enter radius value ") ;
    scanf("%f", &r) ;
    for(x = -x1; x <= x1; x+=0.01 ){
    for(y= -y1; y <= y1;  y+=0.01 ){
    if(x*x+y*y==r*r)
    printf("*");
    else
    printf(" ");
    }
    printf("\n");
    }
    system("PAUSE");
    return 0;
}