View Code of Problem 24

#include <iostream>
#include<stdio.h>
#include<math.h>
using namespace std;
int main() {
	double a, b, c;
	while (scanf("%lf %lf %lf", &a, &b, &c) != EOF) {
		double p = (a + b + c) / 2.0;
		printf("%.2f\n", sqrt(p*(p - a)*(p - b)*(p - c)));
	}
	return 0;

}

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