View Code of Problem 24

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

int main()
{
    float a,b,c,p,s;
    while(scanf("%f%f%f",&a,&b,&c)!=EOF)
    {
        p=(a+b+c)/2;
        s=sqrt(p*(p-a)*(p-b)*(p-c));
        printf("%.2lf\n",s);
    }
    
    return 0;
}