View Code of Problem 24

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