Uses
CRT;
Const
n=5;
var
a:array [1..n,1..n] of integer;
i,j:integer;
begin
clrscr;
writeln('-: ');
randomize;
for i:=1 to n do
begin
for j:=1 to n do
begin
a[i,j]:=random(10)-3;
write(a[i,j]:3);
end;
writeln;
end;
writeln;
for i:=1 to n do
for j:=1 to n do
if (i+j<n+1) then
a[i,j]:=0;
writeln;
writeln('-: ');
for i:=1 to n do
begin
for j:=1 to n do
begin
write(a[i,j]:4);
end;
writeln;
end;
readkey
end.