Заполнить массив 7*7 по правилу:

10001

01010

00100

01010

10001

const n=7;

var a:array[1 ... n, 1 ... n] of integer;

i, j:integer;

begin

for i:=1 to n do

for j:=1 to n do

if (i=j) or (j=n-i+1)

then a[i, j]:=1 else a[i, j]:=0;

for i:=1 to n do

begin

for j:=1 to n do write (a[i, j]:2);

writeln;

end;

end.

Результат:

1 0 0 0 0 0 1

0 1 0 0 0 1 0

0 0 1 0 1 0 0

0 0 0 1 0 0 0

0 0 1 0 1 0 0

0 1 0 0 0 1 0

1 0 0 0 0 0 1