c : the Cool Command-line CalCulator
Version 1.56 (The shareware version)
Featuring:
   :The four common math operations (+, -, *, and /)
   :Percentage function
   :Exponent and root functions
   :Control parameters for formatting output
   :PI constant
   :Natural log. function
   :Support for all real numbers up to 18 digits long
   :Time/date functions
   :Easy access from DOS-Not a TSR!   
   :Cool manual (what you're reading right now)
   :On-line help
   :CHEAP ($5) registration fee

  This program is SHAREWARE!  Please register it!  I put a lot of
time and effort into writing this program, and, if I do say so
myself, it's came out very well.  I took the time to test it
against other programs of the same nature, and it came out on
top.  While some programs were undoubtably more powerful, they
generally had much higher registration fees.  And not one of them
had all the features of c v1.56.  Please, it's REALLY cheap! 
Five bucks!  If you can't afford five dollars, you should sell
your computer....
  Plus registration gets lots of cool stuff.  I'll send you the
new version of c, which I should finish in a few weeks and will
hopefully include geometric and algebraic functions, my undying
gratitude, and, if you're on the internet or CServe, notices
every time a new version of c comes out.
  Register on CompuServe!  Easy.  Just GO swreg, this is #2193.  
  Or send the fee to:
             Tom Wilson
             3172 18th st. NW
             Washington, DC 20010

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Handy manual for c v1.56:

Easy usage:

  C supports the four basic mathematical operations: addition,
subtraction, multiplication, and division.  It also supports all
real numbers up to 18 digits long, making it WAY more powerful
than your standard calculator.  To use on of these functions,
simply type "c [x] [y] [z]" at the DOS prompt, with x being the
first operand, y the operator, and z the second operand.  So four
times four would be written:
    c 4 * 4
Other examples:
    c 8.875 + 89.35601   (addition)
    c 12 - 90.6835       (subtraction)
    c 100.34 * 12.99148  (multiplication)
    c 16.5 / 10002301.34 (division)



Exponents and roots:

   C also has functions for finding a number to a power, and the
various roots of a number.  The operators are '^' (exponent
operator) and 'r' (root operator).  These are used the same way
as the simple operations.  Twenty to the third power would be
written:
    c 20 ^ 3

  The cube root of twenty would be written
    c 20 r 3

   NOTE: The exponent operator ('^') supports real numbers, but
the root function does not.  If you enter a root with a decimal
value, it will be rounded to the nearest integer.  So, 
     c 4 r 2.3 
would be the same as
     c 4 r 2

Percentages:

   C also has a function for finding percentages of numbers. 
This is the '%' operator.  This function works like the standard
operator also, twenty-four percent of eighty is written:
     c 24 % 80

   The percentage function ('%') support as real numbers up to 18
digits, just like the common operators.

Control parameters:

   C also features several control parameters which are used to
format the output of the above functions (and ONLY the above
functions).  Normally, c displays the answer to the third decimal
place, but you can change this with the control parameters.  The
control parameters are : +L, +E, +R, +T, and +N.  Their uses are
shown below:

   The +L function displays the result of the operation to the
5th decimal place.  For example:
     c 4.673 * 6.3873 +L (The result is shown to the fifth
decimal place)

   The +E function displays the result of the operation to the
tenth decimal place.  For example
     c 6.675 / 8.30012 +E (The result is shown to the tenth
decimal place)

   The +R function rounds a number to the nearest integer.  So a
result of 4.5601 would be shown as 5.  For example:
     c 12.776 + 6.987 +R (Result is rounded to the nearest
integer)

   The +T function truncates the decimal value from the answer. 
So a result of 4.5601 would be shown as 4.  For example:
     c 9801.24 - 24.998 +T (Decimal value in result is truncated)

    The +N function displays the answer in exponential notation,
which the decimal value rounded to the nearest integer.  For
example:
     c 78.98 + 200 +N (Result is shown in exponential notation)

    
PI constant:
  
   C includes a constant for PI, which is written as p.  The PI
constant can be used anywhere in the program.  For instance:
      c 18 + p, or
      c  p % 205

Natural Logarithm function:

  C also includes a function for gaining the natural log of a
number, or log to base e.  This is written as LN.  It usage is "c
ln [x]", where x equals any real number.  For example:
     c ln 67.34

  The PI constant works with ln.  It is used:
     c ln p

   None of the control parameters works with ln. It always
displays the result to the fifth decimal place.

Time/date functions:

   Finally, c includes two other non math-related functions, time
and date.  Time displays the current time (according to the clock
in your PC), and date shows the current date.  Their usage is
simple, type "c time" or "c date" to access these.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  Remember, if you continue to use this software without
registering it, you are in violation of a federal law.  Plus, you
are depriving me of money which I need to further my education
(or upgrade my computer).  It's just five bucks, people. 
Register on Compuserve, GO swreg; this is program # . Thank you
for your support.... :)

  Questions and comments are welcome.  Write me and say what you
would like in the next version.  I'm available at CIS address:
72732,152, or Prodigy ID: XDKP09E.  If your on the internet,
that's XDKP09E@prodigy.com. Remember to register!