spirala model examen

#include <iostream>

using namespace std;

void afisare_matrice(int a[10][10], int m, int n)
{
    for(int i = 0; i < m; i++)
    {
        for(int j = 0; j < n; j++)
            cout<<a[i][j]<<" ";
    cout<<endl;
    }
}

void spirala(int a[10][10], int m, int n)
{
    int k=0,p,q,r,i,j;
    int start = m*n;
    p = 0; q = m - 1; r = n - 1;
    while(start)
    {
        for(int i = q; i >= p; i--)a[i][p] = start--;
        for(int j = p + 1; j <= r; j++) a[p][j] = start--;
        for(int i = p + 1; i <= q; i++)a[i][r] = start--;
        for(int j = r - 1; j > p  ; j--) a[q][j] = start--;
        p++; q--; r--;
    }
}
int main()
{
    int  a[10][10];
    spirala(a,4,4);
    afisare_matrice(a,4,4);
    return 0;
}