View Code of Problem 24

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

int main()
{
    double p,s;
    int a,b,c;
    while(scanf("%d%d%d",&a,&b,&c)!=EOF)
    {

        p=(1/2.0)*(a+b+c);
        s=sqrt(p*(p-a)*(p-b)*(p-c));
        printf("%.2lf\n",s);

    }


    return 0;
}