2013/2014: I parcijalni 3.zad

#include<iostream>
#include<vector>
#include<stdexcept>
#include <iomanip>

typedef std::vector<std::vector<int>> Matrica;

Matrica KreirajMatricu(int br_redova, int br_kolona)
{
    return Matrica(br_redova, std::vector<int>(br_kolona));
}

Matrica PomnoziMatrice(Matrica m1, Matrica m2)
{
    for (int i(0); i<m1.size(); i++)
    {
        for (int j(0); j<m1.size(); j++)
        {
            if (m1[i].size() != m1[j].size()) throw std::domain_error("Parametar nema formu matrice.");
        }
    }
    for (int i(0); i<m2.size(); i++)
    {
        for (int j(0); j<m2.size(); j++)
        {
            if ((m2[i].size() != m2[j].size()) ) throw std::domain_error("Parametar nema formu matrice.");
        }
    }

    Matrica m3(KreirajMatricu(m1.size(), m2[0].size()));

    bool mogu_se_mnoziti(false);
    if (m1[0].size() == m2.size())
        mogu_se_mnoziti = true;
    if (mogu_se_mnoziti == false ) throw std::domain_error("Matrice nisu saglasne za mnozenje.");
    else
    {
        for (int i(0); i<m1.size(); i++)
        {
            for (int j(0); j<m2[0].size(); j++)
            {
                int suma(0);
                for (int k(0); k<m2.size(); k++)
                    suma+=m1[i][k] * m2[k][j];
                m3[i][j] = suma;
            }
        }
    }
    return m3;
}

int main()
{
    try
    {

        Matrica m1{{1,2,3}, {2,3,4},{1,2,3}};
        Matrica m2{{1,0,3},{2,5, 1},{1,0,5}};

        Matrica m3 = PomnoziMatrice(m1,m2);
        std::cout<<"Pomnozene matrice su: \n";

        for (int i(0); i<m3.size(); i++)
        {
            for (int j(0); j<m3[0].size(); j++)
            {
                std::cout<<std::setw(8)<<m3[i][j];
            }
            std::cout<<std::endl;
        }
    }

    catch( std::domain_error e)
    {
        std::cout<<e.what();
    }
    return 0;
}