I have never used octal numbers in my code nor come across any code that used it. I bet you have. According to the standard, numeric literals which start with zero are octal. This includes, trivially, 0. Every time you have used or seen a literal zero, this has been octal. Strange but true.
If you are making child support payments in Texas, the law generally requires you to do so until your child turns 18, which is the age that marks adulthood in the state, or when he graduates from high school -- whichever comes later.
In some states, child support stops when a child is 18 or graduates from high school, in others, it stops at 21. The majority of states use 18 as the age of majority (in cases where the youth is still in high school the age of majority may extend beyond 18). 25-320(F), Â§ 25-501(A). Arkansas. 18 years of age; child support ceases at age of majority unless the child is still attending high school. If the child is still attending high school, upon the child's high school graduation or the end of the school year after the child reaches 19 years of age, whichever is earlier.