View Code of Problem 24

#include "stdio.h"
#include "math.h"
#include "string.h"

void main()
{
	int i,j,k;
	int a,b,c;
	double r,sum;
	scanf("%d%d%d",&a,&b,&c);
	r=(a+b+c)/2.00;
//	printf("%.2lf",r);
	sum=sqrt(r*(r-a)*(r-b)*(r-c));
	printf("%.2lf",sum);
	
}