View Code of Problem 24

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


int main(){
	int  a,b,c;
	while(scanf("%d%d%d",&a,&b,&c)!=EOF){
	float p=(float)(a+b+c)/2;
	printf("%.2f",sqrt(p*(p-a)*(p-b)*(p-c)));
	}
}