Ivan

?1 #include < iostream >
?2 #include < iomanip >
?3 using ? namespace ?std;
?4 void ?main()
?5 {
?6 ???? int ?i,j,k,n;
?7 ???? int ?mat[ 10 ][ 10 ],value = 1 ;
?8 ????cout << " n=? " ;
?9 ????cin >> n;
10 ???? for (k = 0 ;k < (n + 1 ) / 2 ;k ++ )
11 ???? {
12 ???????? for (i = k;i < n - k;i ++ )
13 ????????????mat[i][k] = value ++ ;
14 ???????? for (i = k + 1 ;i < n - k;i ++ )
15 ????????????mat[n - k - 1 ][i] = value ++ ;
16 ???????? for (i = n - k - 2 ;i >= k;i -- )
17 ????????????mat[i][n - k - 1 ] = value ++ ;
18 ???????? for (i = n - k - 2 ;i > k;i -- )
19 ????????????mat[k][i] = value ++ ;
20 ????}
21 ????cout << endl;
22 ???? for (i = 0 ;i < n;i ++ )
23 ???? {
24 ???????? for (j = 0 ;j < n;j ++ )
25 ????????????cout << setw( 8 ) << mat[i][j];
26 ????????cout << endl;
27 ????}
28 }