1define f() { 2 "ibase:";ibase 3 a=A;a 4 a=F;a 5 a=G;a 6 a=Z;a 7 a=0A;a 8 a=0F;a 9 a=0G;a 10 a=0Z;a 11} 12f() 13ibase=9;f() 14ibase=A;f() 15ibase=F;f() 16ibase=G;f() 17#ibase=Z;f() 18halt 19