You don’t have to until you start wondering why a particular value in your program is NULL instead of a number. Then you realize that the program is trying to do something completely absurd like find the tenth number of a vector that has only 5 values.
Interesting. I’ve never wondered about that though.
You don’t have to until you start wondering why a particular value in your program is NULL instead of a number. Then you realize that the program is trying to do something completely absurd like find the tenth number of a vector that has only 5 values.