tut6-zad3

#include <iostream>
#include <vector>
#include <algorithm>
#include<stdexcept>


int **Funk (int n) {
    int **niz=nullptr;
try {
    if (n<=0) throw std::domain_error ("N mora biti pozitivno! ") ;
    niz=new int* [n];


    for (int i=1; i<n; i++) niz[i]=nullptr;

      for (int i=0; i<n; i++)
        {
            niz[i]=new int[2*i+1];

        }
        for (int i=0; i<n; i++) {
            for (int j=0; j<i+1; j++)
                niz[i][j]=niz[i][2*i-j]=j+1;
        }
    return niz;
}
catch (std::bad_alloc) {
    if (niz!=nullptr) {
            for(int i=0; i<n; i++) delete [] niz[i];
    delete [] niz;
    }
throw "Alokacija nije uspjela.";}
}

int main() {

    std::cout<<"Unesite n: ";
    int n;
    std::cin>>n;
    try {
    int **niz=Funk(n);
    for (int i=0; i<n; i++) {
        for (int j=0; j<2*i+1; j++)
            std::cout<<niz[i][j]<<" ";
        std::cout<<std::endl;
    }
    }



    catch(std::domain_error *e) {
    std::cout<<"greska: "<<e;
    }
    catch(std::bad_alloc *s) {
    std::cout<<"greska: "<<s;
    }
    return 0;

}