Pascal:
var i:integer;
begin
i:=21;
while i<=50 do<br> begin
write (i,' ');
inc(i,2);
end;
readln;
end.
C++:
#include
#include
using namespace std;
int main()
{
for (int i = 21; i<=50; i+=2)<br> {
cout <<i <<" ";<br> }
cout <<endl;<br> getch();
return 0;
}