Implementation Problems w/ the Package Calendar

Implementation Problems w/ the Package Calendar

[cis.ohio-state.edu!zaphod.mps.ohio-state.edu!malgudi.oar.net!zeus.frankli]

am aenior working for my BSCS and am trying to teach myself the language
Ada. I am having difficulty w/ the data types used in the Package
Calendar. I am using a the following syntax: 

  t : time := clock;
  d : duration;
  begin --main program 
     t := clock;
     -- main function
     d := (t-clock);
  end prog;

I am trying to find the growth rate of several algorithms using big O
notation. My problem lies in trying to display the value held in d ( the
duration variable ). I cannot find a package (text_io, basic_num_io,
etc..) that will allow me to display (put) the variable d. 

Can anyone tell me how (or what package to use) to display a variable
with the data type of duration. Please send me a message directly (I am
not very expirienced w/ using the Internet). I can be reached at 
hart@franklin.edu . 

Your help is greatly appriciated,

Drew R. Hart I

Re: Implementation Problems w/ the Package Calendar

[Arthur Evans]

hart@zeus.franklin.edu (Drew Hart) asks how to output a value of type
Duration.

Duration is a fixed point type declared in package Standard (LRM C(19)).
If you look up Duration in the LRM's index, you will find references to
section 9.6 (in which package Calendar is introduced) and to Appendix C;
the latter contains its declaration.

To output values of this type, you must instantiate Text_IO.Fixed_IO.
That package's spec is in 14.3.10 and it is explained in 14.3.8.  Write

    package Duration_IO is new Text_IO.Fixed_IO(Num => Duration);

and you then have access to the subprograms described in 14.3.8

Good luck!

Art Evans
----------------------------------------
Arthur Evans, Jr, PhD		Ada Consultant
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