a:=500: for t from 1 to 100 by 2 do a:=a+t; od: a;
>for i in {1,2,3,9} do i**2; od;
> b:=0: t:=1: while b<5 do printf("Het getal %a is priem: %a. \n",b,isprime(b)); b:=b+t; od: