And the teacher gave us this stuff: uses crt; var i, j, rno, ratio, nb : integer; oldcell, newcell : array[0..21, 0..41] of char; cont : char; begin randomize; writeln('Enter the initial percentage of living cells (0-100) : '); readln(ratio); for i := 0 to 21 do for j := 0 to 41 do newcell[i, j] := ' '; for i := 1 to 20 do for j := 1 to 40 do begin rno := random(100); if rno < ratio then newcell[i, j] := 'X' end; cont := 'Y'; while cont <> 'N' do begin clrscr; for i := 1 to 20 do begin for j := 1 to 40 do write(newcell[i,j]); writeln end; for i := 1 to 20 do for j := 1 to 40 do oldcell[i,j] := newcell[i,j]; for i := ??? for j := ??? begin nb := 0; if oldcell[i-1, j-1] = 'X' then nb := nb + 1; (* Missing statements here *) end; write('Continue (Y/N)?'); readln(cont) end; end. Please help me!!! Urgent!!!!