View Code of Problem 24

#include <stdio.h>
#include <math.h>
int main(void)
{
	int a,b,c;
	float p,S;
	scanf("%d,%d,%d",a,b,c);
	p=(a+b+c)/2.0;
	S=sqrt(p*(p-a)*(p-b)*(p-c));
	printf("%.2f",S);
	return 0;
}