View Code of Problem 24

#include<stdio.h> 
#include<string.h>
#include<math.h>
int main(){ 
    int i,a,b,c;
    double s,q;
    while(scanf("%d%d%d",&a,&b,&c)!=EOF){
        q=(a+b+c)/2.0;
		s=sqrt(q*(q-a)*(q-b)*(q-c));
		printf("%.2lf\n",s);	
	}
	 
	return 0;
}