tut13-zad1

#include <iostream>
#include <cmath>
#include <stdexcept>
#include <cstring>
#include <string>
#include <algorithm>
#include "TestCurenja.h"


using namespace std;

class Lik
{
protected:
    string naziv;
public:
    Lik (string ime): naziv(ime) {}
    virtual ~Lik () {}
    virtual void  IspisiAtribute() const =0;
    virtual double DajObim () const =0;
    virtual double DajPovrsinu () const =0;

};
class Krug : public Lik
{
    double radijus;
    const double PI=4*atan(1);
public:
    Krug(double r) : Lik("Krug"), radijus(r)
    {
        if (r<=0) throw "Poluprecnik mora biti pozitivan.";
    }

    double DajObim () const
    {
        return 2*radijus*PI;
    }

    double DajPovrsinu() const
    {
        return radijus*radijus*PI;
    }


    void IspisiAtribute() const
    {
        cout<<naziv<<" : "<<"povrsina: "<<DajPovrsinu()<<" , obim: "<<DajObim()<<endl;
    }
};

class Pravougaonik : public Lik
{
    double a,b;
public:
    Pravougaonik (double a, double b) : Lik("Pravougaonik"), a(a), b(b)
    {
        if (a<=0 || b<=0) throw "Duzine stranica pravougaonika moraju biti pozitivne! ";
    }
    double DajObim() const
    {
        return 2*(a+b);
    }
    double DajPovrsinu() const
    {
        return a*b;
    }

    void IspisiAtribute() const
    {
        cout<<naziv<<" : "<<"povrsina: "<<DajPovrsinu()<<" , obim: "<<DajObim()<<endl;
    }
};

class Trougao : public Lik
{
    double a,b, c;
public:
    Trougao( double a, double b, double c) : Lik("Trougao"), a(a), b(b), c(c)
    {
        if (a<=0 || b<=0 || c<=0) throw "Duzine stranica trougla moraju biti pozitivne! ";
    }

    double DajObim() const
    {
        return a+b+c;
    }
    double DajPovrsinu() const
    {
        double s((a+b+c)/2);
        return sqrt(s*(s-a)*(s-b)*(s-c));
    }
    void IspisiAtribute() const
    {
        cout<<naziv<<" : "<<"povrsina: "<<DajPovrsinu()<<" , obim: "<<DajObim()<<endl;
    }
};




int main ()
{
    int n;
    cout<<"Unesite broj likova: ";
    cin>>n;
    cin.clear();
    cin.ignore(1000, '\n');
    try
    { Lik **likovi=new Lik*[n];
    fill (likovi, likovi+n, nullptr);
    int i=0;
    while (i<n) {
    char temp;
    switch (temp=cin.get()) {
    case 'P': { double a,b;
     cin>>a;
     if (cin.get()!=',') { cout<<"Nepravilan unos!";
     break;
     }
     cin>>b;
     if (!cin) {
            cout<<"Nepravilan unos!";
     break;
     }
     if(cin.get() != '\n') cout<<"Nepravilan unos!";
     likovi[i]=new Pravougaonik(a,b);
        i++;
        break; }

        case 'K': {
            double r;
            cin>>r;
            if (!cin) { cout<<"Nepravilan unos."; break;}
               if(cin.get() != '\n') cout<<"Nepravilan unos!";
            likovi[i]=new Krug(r);
            i++;
        break;
        }
        case 'T': {
            double a,b,c;
            cin>>a; if(cin.get()!=',') {
                cout<<"Nepravilan unos!";
                break;
            }
            cin>>b; if(cin.get()!=',') {
                cout<<"Nepravilan unos!";
                break;
            }
            cin>>c; if(!cin) {
                cout<<"Nepravilan unos!";
                break;
            }
    if(cin.get() != '\n') cout<<"Nepravilan unos!";
            likovi[i]=new Trougao(a,b,c);
            i++;
            break;
        }
        default: cout<<"Greska, unesite ponovo: ";

   }
    }
    for (int i=0; i<n; i++)
        likovi[i]->IspisiAtribute();

        for (int i=0; i<n; i++) delete likovi[i];
        delete [] likovi;
    }
    catch (const char por[]) {
    cout<<por;
    }

    return 0;
    }