#include<iostream>
#include<fstream>
using namespace std;

int n;

void citire_matrice(int m[10][10])
{
int i, j;
ifstream f ("matrice.txt");
f >> n;
if (f==NULL) cout<<"Fisierul nu se poate deschide!!!"<<endl;
else
for (i=0; i<n; i++)
    for (j=0; j<n; j++)
    {
    f >> m[i][j];
    }
}

void afisare_matrice(int m[10][10])
{
int i, j;

cout<<"\nMatricea citita este: "<<endl;

for (i=0; i<n; i++)
{
    cout<<"\n";
    for (j=0; j<n; j++)
    cout<<m[i][j]<<" ";
}

}

int prelucrare_matrice(int m[10][10])
{
 int i, j, p = 1, ok = 1;
 cout << '\n';
for (i=0; i<n; i++){
    for (j=0; j<n; j++)
     if( i > j && m[i][j] % 2){
        p *= m[i][j];
        ok = 0;
     }
}
if(ok)
 return 0;

 return p;
}

int main()
{
    int mat[10][10],mat1[10][10], a;
   ofstream  r ("rezultat.txt");

cout<<"Prima mea matrice citita:"<<endl;
citire_matrice(mat);
afisare_matrice(mat);
cout<<"\nProdusul elementelor impare de sub diagonala principala din prima matrice: date salvate in fiser ";
a = prelucrare_matrice(mat);
if(a == 0)
    r << "\nNu exista elemente impare sub diagnala principala\n";
else
    r << a << '\n';;

cout<<"\nA doua matrice citita:"<<endl;
citire_matrice(mat1);
afisare_matrice(mat1);
cout<<"\nProdusul elementelor impare de sub diagonala principala in a doua matrice: date salvate in fiser ";
a = prelucrare_matrice(mat1);
if(a == 0)
    r << "\nNu exista elemente impare sub diagnala principala\n";
else
    r << a << '\n';

}