View Code of Problem 24

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;
int main( )
{
    int a;
    int b;
    int c;

    while(cin >> a>> b>> c)
    {
        double p=(a+b+c)/2.0;
        double d=p*(p-a)*(p-b)*(p-c);
        double s=sqrt(d);

        cout <<fixed <<setprecision (2) << s<< endl;
    }

    return 0;
}