circumradius.c

/*Finding circumradius for triangle*/

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

int main(void)
{
   double x1,x2,x3,y1,y2,y3,ab,bc,ac;
   printf("Enter the coordinates of A\n");
   scanf("%lf,%lf",&x1,&y1);
   printf("Enter the coordinates of B\n");
   scanf("%lf,%lf",&x2,&y2);
   printf("Enter the coordinates of C\n");
   scanf("%lf,%lf",&x3,&y3);
   
  /*Formula for calculating distance*/ 
   
   ab=sqrt(pow((x1-x2),2)+pow((y1-y2),2));
   bc=sqrt(pow((x2-x3),2)+pow((y2-y3),2));
   ac=sqrt(pow((x1-x3),2)+pow((y1-y3),2));
   
   printf("The length of sides are %.2lf,%.2lf,%.2lf\n",ab,bc,ac);
   
  /*Computing semi perimeter and area*/ 
   
   double s,area,circumradius;
   s=(ab+bc+ac)/2.0;
   area=sqrt(s*(s-ab)*(s-bc)*(s-ac));
   printf("The area is %.2lf\n",area);
   
   circumradius=(ab*bc*ac)/(4.0*area);   /*Formula for circumradius*/
   printf("The circumradius is %.1lf\n",circumradius);
   return 0;
}