Home Accessibility Courses Twitter The Mouth Facebook Resources Site Map About Us Contact
 
For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Formatted printing
Strings and Regular Expressions example from a Well House Consultants training course
More on Strings and Regular Expressions [link]

This example is described in the following article(s):
   • Regular Expressions in Ruby - [link]

Source code: d4_6 Module: R109
# Formatted printing in Ruby - printf sprintf and %

gift = 1000.0

# --------- plain print - just output the data

for kids in 1..15
        egets = gift / kids
        print "With #{kids} children, each would get #{egets} pounds\n";
        end

# ---------- printf - formatted print; more flexible

# with %....letter we're telling printf that we want to fill something in.
# %8.2f - a float, 8 characters wide, of which 2 are after the decimal place

for kids in 1..15
        egets = gift / kids
        printf("With %2d children, each would get %8.2f pounds\n",kids,egets)
        end

# ----------- sprintf - more flexible and we can do other things after formatting

flout = File.new "gerald.txt","w"
for kids in 1..15
        egets = gift / kids
        stuff = sprintf("With %2d kiddos, each would get %8.2f pounds\n",kids,egets)
        stuff = ">> " + stuff
        flout.write stuff
        end
flout.close

__END__

Sample Output

-bash-3.2$ ruby d4_6
With 1 children, each would get 1000.0 pounds
With 2 children, each would get 500.0 pounds
With 3 children, each would get 333.3333333333333 pounds
With 4 children, each would get 250.0 pounds
With 5 children, each would get 200.0 pounds
With 6 children, each would get 166.66666666666666 pounds
With 7 children, each would get 142.85714285714286 pounds
With 8 children, each would get 125.0 pounds
With 9 children, each would get 111.11111111111111 pounds
With 10 children, each would get 100.0 pounds
With 11 children, each would get 90.9090909090909 pounds
With 12 children, each would get 83.33333333333333 pounds
With 13 children, each would get 76.92307692307692 pounds
With 14 children, each would get 71.42857142857143 pounds
With 15 children, each would get 66.66666666666667 pounds
With 1 children, each would get 1000.00 pounds
With 2 children, each would get 500.00 pounds
With 3 children, each would get 333.33 pounds
With 4 children, each would get 250.00 pounds
With 5 children, each would get 200.00 pounds
With 6 children, each would get 166.67 pounds
With 7 children, each would get 142.86 pounds
With 8 children, each would get 125.00 pounds
With 9 children, each would get 111.11 pounds
With 10 children, each would get 100.00 pounds
With 11 children, each would get 90.91 pounds
With 12 children, each would get 83.33 pounds
With 13 children, each would get 76.92 pounds
With 14 children, each would get 71.43 pounds
With 15 children, each would get 66.67 pounds
-bash-3.2$

Learn about this subject
This module and example are covered on the following public courses:
 * Learning to program in Ruby
 * Ruby Programming
Also available on on site courses for larger groups

Books covering this topic
Yes. We have over 700 books in our library. Books covering Ruby are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "Strings and Regular Expressions" training module. You'll find a description of the topic and some other closely related examples on the "Strings and Regular Expressions" module index page.

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.

Purpose of this website
This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

Web site author
This web site is written and maintained by Well House Consultants.

Conditions of use
Past attendees on our training courses are welcome to use individual examples in the course of their programming, but must check the examples they use to ensure that they are suitable for their job. Remember that some of our examples show you how not to do things - check in your notes. Well House Consultants take no responsibility for the suitability of these example programs to customer's needs.

This program is copyright Well House Consultants Ltd. You are forbidden from using it for running your own training courses without our prior written permission. See our page on courseware provision for more details.

Any of our images within this code may NOT be reused on a public URL without our prior permission. For Bona Fide personal use, we will often grant you permission provided that you provide a link back. Commercial use on a website will incur a license fee for each image used - details on request.

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2021: 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • EMAIL: info@wellho.net • WEB: http://www.wellho.net • SKYPE: wellho

PAGE: http://www.wellho.net/resources/ex.php • PAGE BUILT: Sun Oct 11 14:50:09 2020 • BUILD SYSTEM: JelliaJamb