Topical Information

Here are a few questions to help you clarify your understanding of function arguments.

Directions

You won't use matching responses multiple times, and each blank should have only one response ...and note that there are more responses than blanks!

Questions

1.  

   F	Actual	A	means you can't change the argument within the function
   		B	the argument listed in the function's header
   P	Value	C	means the argument must be a constant
   		D	means a variable cannot be passed
   E	Reference	E	means the actual argument can be changed
   		F	the argument listed in the function call
   A	const	G	I haven't got a clue
   		H	means the argument is in a library
   B	Formal	J	means the argument is in a tuxedo
   		M	means nothing in C++
   M	Parametric	P	means the actual argument won't change, but the formal one may
   		S	means the formal argument won't change, but the actual one may

2. In terms of a function, what does input mean?

   
           Value(s) given to a function by its caller during the function call
           process.
   
           Or:
   
           Value(s) known before a function is called, but necessary for the
           function to use in its processing.  Such values are given to or sent
           to the function by the caller during the function call process.
           
           The actual arguments are listed between parentheses after the
           function's name in the call.  The formal arguments are listed with
           their types between parentheses after the function's name in its head
           (seen both in the prototype and the definition).  Formal arguments
           give names (and hopefully meaning) to the function's desired inputs.
           Actual arguments provide the values important to the caller for this
           particular call.
   
   

   Ditto, but what does output then mean?

   
           Value(s) produced by a function to give back to the caller.
   
           The return mechanism can be used to send a single value back to the
           caller of the function.  They would then use this value in a
           surrounding calculation, an assignment, or send it to cout for
           display.
   
           The reference mechanism can be used to give multiple values back to
           the caller.  It does this by granting the function write access to the
           caller's memory locations.  (Normally memory locations are visible
           only to the individual function that created them.)
   
   

   Do either of these have anything to do with the console (by definition...)?

   
           NO!!!
   
           (Although a function's output may be displayed on the console, this is
           a use after the function has 'output' its result(s).  And even though
           a function's input may have come from the console, this is a source
           before the data is 'input' to the function.)