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.
If your child has not graduated high school by his or her 18th birthday, child support will not end at 18, but instead will continue until graduation. 19 years old is the maximum age of a child in Florida for parent to continue receiving child support (except in rare instances â read below).