View Code of Problem 24

#include <stdio.h>
#include <math.h>
int main(){
	int a,b,c;
	float s,p;
	while(~scanf("%d %d %d",&a,&b,&c)){
	
	p=(a+b+c)/2.0;
	s=sqrt(p*(p-a)*(p-b)*(p-c));
	printf("%.2f\n",s);
    }
	
}