Esame 10

#include <iostream>

using namespace std;

void matrice (int a[],int n,int b[],int m)
{
    int i=0,k;
    bool identita=true;
    while ((i<(n-1)) && (identita))
    {
        k=i+1;
        while ((k<n) && (identita))
        {
            if (a[i]==a[k]) identita=false;
            k++;
        }
        i++;
    }
    i=0;
    if (!identita)
    {
        int c[n][n];
        while (i<n)
        {
            k=0;
            while (k<n)
            {
                if (i==k) c[i][k]=1;
                else c[i][k]=0;
                k++;
            }
            i++;
        }
        i=0;
        while (i<n)
        {
            k=0;
            while (k<m)
            {
                cout << c[i][k] << " ";
                k++;
            }
            cout << endl;
            i++;
        }
    } else
    {
        int c[n][m];
        while (i<n)
        {
            k=0;
            while (k<m)
            {
                c[i][k]=a[i]*b[k];
                k++;
            }
            i++;
        }
        i=0;
        while (i<n)
        {
            k=0;
            while (k<m)
            {
                cout << c[i][k] << " ";
                k++;
            }
            cout << endl;
            i++;
        }
    }
}

int main()
{
    const int N=4,M=3;
    int a[N]={0,1,2,3}; // per vedere la matrice identità in action basta scrivere {0,1,2,2}
    int b[M]={0,1,2};
    matrice (a,N,b,M);
    return 0;
}