Just as different automobiles can park in a parking space at different times, the calling code can pass a different argument to the same parameter every time that it calls the procedure. You can think of the parameter as a parking space and the argument as an automobile. To communicate this information to the procedure, the procedure defines a parameter, and the calling code passes an argument to that parameter. This information consists of variables, constants, and expressions that you pass to the procedure when you call it. A procedure that performs repeated or shared tasks uses different information for each call. In most cases, a procedure must have some information about the circumstances in which it has been called.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |