View Code of Problem 24

#include <stdio.h>
#include <math.h>
 
int main(){
  float a,b,c,p,s;
  while(scanf("%f %f %f",&a,&b,&c)!=EOF){
    p=(a+b+c)/2;
    s=sqrt(p*(p-a)*(p-b)*(p-c));
    printf("%.2f\n",s);
  }
  return 0;
}