Код: Выделить всё
program pr1;
var a,b:array[1..15,1..15] of real; i,n,j:integer; c,d:real;
begin
randomize;
writeln('Vvedite n');
repeat
readln(n);
until n mod 2=0;
for i:=1 to n do begin
for j:=1 to n do
begin
a[i,j]:=random(20);
write(a[i,j]:4:0);
end;
writeln;
end;
for i:=1 to n do
for j:=1 to n do
begin
b[i,j+1]:=a[i,j];
b[i,j]:=a[i,j+1];
a[i,j]:=b[i,j];
a[i,j+1]:=b[i,j+1];
j:=j+1;
end;
for i:=1 to n do
begin
for j:=1 to n do
begin
write(a[i,j]:5:0);
end;
writeln;
end;
readln;
end.