[st10@nrs-labs lab8]$ funct_play

----------------------------------------------
Welcome to the 2016-10-13 version of funct_play!
----------------------------------------------

Are there any already-created C++ functions (in the current 
   working directory) which you would like to be able to use
   within your new function?
   (type y if so, n if not)
your answer: n

Is your new function already in a file in the local directory?
(answer y or n): n

--- Entering a new function  ---

Enter the name for your new function:
Function name: name_length

***** DESIGN RECIPE STEP 2.1: *****
Enter the signature comment for the function name_length, using format:
   name_length : parameter_type parameter_type ... -> return_type

signature: name_length : string string -> int

Your signature for name_length is:
--------------------------------------------------------
signature: name_length : string string -> int
--------------------------------------------------------

***** DESIGN RECIPE STEP 2.2: *****
Enter a purpose statement for the function name_length, 
   "a brief comment of what the function is to compute" [HtDP,
   p. 18]
(enter a line containing NOTHING but q and typing the Enter key
   to show when your purpose statement is complete):

purpose: expects a first name and a last name,
    and returns the number of characters in both
    combined
q

Purpose statement:
---------------------------------------------------------------
purpose: expects a first name and a last name,
    and returns the number of characters in both
    combined
---------------------------------------------------------------

***** DESIGN RECIPE STEP 2.3: *****
Enter the header for the function, using the format:
   return_type name_length (param_type param_name, ...)

Function header:
int name_length(string first_name, string last_name)

Your header for name_length is:
-------------------------------------------------
int name_length(string first_name, string last_name)
-------------------------------------------------

***** DESIGN RECIPE STEP 3: *****
Enter at least one example call of function name_length
   including input(s) and the expected output given those
   input(s); for example,
      my_funct(3, 4) == 12
      my_funct(0, 0) == -3
(enter a line containing NOTHING but q and typing the Enter key
   to show when you have entered all of your examples):

Examples: name_length("Justin", "Savage") == 12
          name_length("Sharon", "Williams") == 14
q

Examples:
---------------------------------------------------------------
examples: name_length("Justin", "Savage") == 12
           name_length("Sharon", "Williams") == 14
---------------------------------------------------------------

BEFORE you type in name_length's body --- are there any
   NEW named constants that you want to CREATE?
   (answer y or n):

your reply: n

NOTE --- if a named constant was already declared for an
   OLD function that name_length calls, then it SHOULD be 
   visible for use in name_length, too...
(at least, it should be the way that funct_play sets these up ---
    we will discuss SCOPE later, and then perhaps discuss some
    other const declaration placement options.

***** DESIGN RECIPE STEPS 4, 5 *****
Enter the template/body of the name_length (the part following the header),
   being sure to include the { and } that should enclose it.
(enter a line containing NOTHING but q and typing the Enter key
   to show when name_length's body is complete):

Enter body following the header:

int name_length(string first_name, string last_name)
{
    return first_name.length() + last_name.length();
}
q

name_length's body:
----------------------------------------------------------------
{
    return first_name.length() + last_name.length();
}
----------------------------------------------------------------

COMPILING name_length.cpp...
-----------------------------------------------------------------
name_length.cpp COMPILED! 8-)

Would you like to run name_length_ck_expect?
   (type y if so, n if not)
your answer: y


testing name_length: true's should mean passed: 
---------------------------------------
(name_length("Justin", "Savage") == 12): true
(name_length("Sharon", "Williams") == 14): true


Enter a C++ expression involving:
name_length
...and type enter
   (or type q to quit):
name_length("Moo", "Cow")

value of 6: 
6

Enter next C++ expression and type enter
   (or type q to quit):
q

Quitting funct_play ... goodbye.

[st10@nrs-labs lab8]$