tut1-zad2

#include <iostream>
#include <cmath>
#include <stdlib.h>


int main ()
{
    std::cout<<"Unesite tri broja: ";
    double a,b,c;
    std::cin>>a>>b>>c;
    if (a>0 && b>0 && c>0 && ((a>b+c) || (b>a+c) || (c>b+a))) {
        double s{(a+b+c)/2};
        double p{sqrt(s*(s-a)*(s-b)*(s-c))};
        double alfa,beta,gama;
        gama=(c*c-a*a-b*b)/2*a*b;
        alfa=(a*a-c*c-b*b)/2*c*b;
        beta=(b*b-a*a-c*c)/2*a*c;
        double najveci;
        if (alfa>beta && alfa>gama) najveci=alfa;
        else if (gama>beta && gama>alfa) najveci=gama;
        else najveci=beta;
        double pi(4*atan(1));
        double step, stepeni,minute,min , sek, sekunde;
        step=(najveci*180)/pi;
        stepeni= int(step);
        min=(step-stepeni)*60;
        minute=int (min);
        sek=int (min);
        sekunde=(min-sek)*60;
        std::cout<<"Povrsina trougla sa duzinama stranica "<<a<<","<<b<<" i "<<c<<" iznosi "<<p<<std::endl;
        std::cout<<"Njegov najveci ugao ima "<<stepeni<<" stepeni, "<<minute<< "minuta i "<<sekunde<<" sekundi.";

        }
        else
            std::cout<<"Ne postoji trougao cije su duzine stranica "<<a<<","<<b<< " i "<<c<<std::endl;
return 0;

}