To represent a negative number as a literal, prepend a minus sign (-) to the literal, as in -45. If you need to use a literal integer with octal numbering, prepend a 0 to the number. For example, the octal number 777 would be the literal 0777. Hexadecimal integers are used as literals by prepending the number with 0x, as in 0x12 or 0xFF. NOTE. Octal and hexadecimal numbering systems are convenient for many advanced programming uses, but unlikely to be needed by beginners.
To skip a period: 1  When taking monophasic birth control pills:  28-day oral contraceptive (OC) pack users: When you reach the end of the active hormonal pills in a pack (the first 21 or 24 pills), begin the next set of active pills, skipping the inactive (placebo pills) from the previous package.
When to Stop. As long as you are in good health, it does not matter when in your cycle you stop taking your birth control pills. If you do stop before the end of your birth control pack, expect some bleeding before your period, which can affect when your next period starts. If you choose to start taking birth control pills again, you will start with a new pack on the first Sunday of your period.