Section 6.4.4.1 of ISO/IEC 9899:201x specifies the form literal constants can take, and 0 is explicitly listed as an octal constant. Additionally, decimal constants cannot start with a zero. You can see a draft of this standard online here.
1 When you turn 65 (and have no other drug coverage that is as good as Medicare), you need to join a Part D drug plan during the 7-month initial enrollment period when you can sign up for Medicare Part A and Part B. This period runs from three months before the month of your 65th birthday to three months after it.f your coverage is not creditable, you can still keep it. But if you sign up for a Medicare drug plan at some future date, and you have gone for more than 63 days without creditable coverage, you would then pay a late penalty.
You can also sign up for Medicare Part D coverage during the Annual Election Period (AEP), sometimes called the Fall Open Enrollment or Open Enrollment Period for Medicare Advantage and Medicare prescription drug coverage. 1  This takes place from October 15 to December 7. During this time period: 1  Enroll in a Medicare Part D Prescription Drug Plan or change from one Prescription Drug Plan to another. 2  Disenroll from your Medicare Prescription Drug Plan (if youâre already enrolled in one). 3  Enroll in or switch Medicare Advantage Prescription Drug plans.