View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main(){
float i,a,b,c;
float s;
  while(scanf("%f%f%f",&a,&b,&c)!=EOF){
  i=(a+b+c)/2;
  s=sqrt(i*(i-a)*(i-b)*(i-c));
  printf("%.2f\n",s);
  }

}