basic/test/If.basic

if 1
  print "wusi"
  if 0
    print "wusi4"
  end
  if 1
    print "wusi2"
  end
end

if 1 + 1
  print "wusi3"
end

if 0
  print "gusi"
  if 1
    print "gusi2"
  end
end

print "end"