View Code of Problem 24

#include<iostream>
#include<vector>
#include<string>
#include <algorithm>
#include <math.h>

using namespace std;




int main() {
    int a,b,c;
    while(cin >> a >> b >> c){
        double p = (double)(a+b+c) /2 ;
        double s = sqrt(p*(p-a)*(p-b)*(p-c));
        printf("%.2f\n",s);
    }

    return 0;
}