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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.
Simple C structs - building up to full, dynamic example

During the final day of our "Learning to program in C" course - today - we built up an example that introduced structs, then added dynamic memory allocation so that we ended up with a flexible program capable of taking an unlimited amount of data. The build up examples also show (in the last program) reading of data from a file, tokenising a string, and extracting numbers from the various fields.

[link] to Simple demonstation of a structure

[link] to Copying Strings in and out of a structure

[link] to An Array of Structures

[link] to Structure Pointers

[link] to Dynamic allocation of memory for structs

[link] to Dynamic allocation for struct and struct pointers, and populating from file

[link] to Data for final example
(written 2014-12-03)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
C212 - C and C based languages - Memory Management
  [1497] Training Season Starts again! - (2008-01-07)
  [1581] What is an lvalue? (Perl, C) - (2008-03-18)
  [1589] Dynamic Memory Allocation in C - calloc, realloc - (2008-03-22)
  [1670] Dynamic Memory Allocation in C - (2008-06-09)
  [1845] Passing a table from Lua into C - (2008-10-18)
  [2669] Efficient use of dynamic memory - C and realloc - (2010-03-10)
  [2848] C course - final course example puts it all together - (2010-07-02)
  [3118] Arrays of arrays - or 2D arrays. How to program tables. - (2011-01-02)
  [3144] Setting up arrays in C - fixed size at compile time, or dynamic - (2011-01-24)
  [3386] Adding the pieces together to make a complete language - C - (2011-08-11)
  [3416] Storing Tcl source code encoded, and running via your own C program - (2011-09-02)
  [4128] Allocating memory dynamically in a static language like C - (2013-06-30)
  [4634] Regression testing - via a very short C testing framework - (2016-01-29)
  [4635] Encapsulating logic in functions and structs - the C approach to Object Oriented techniques - (2016-01-30)

C210 - C and C based languages - File Handling
  [2002] New C Examples - pointers, realloc, structs and more - (2009-01-20)
  [2571] Reading and writing files in C - (2010-01-12)
  [2572] The what and why of C pointers - (2010-01-13)
  [3122] When is a program complete? - (2011-01-06)
  [4339] Command line and file handling in C - (2014-12-03)

C206 - C and C based languages - Character Strings
  [1338] Handling Binary data in Tcl (with a note on C) - (2007-09-09)
  [2843] String functions in C - (2010-06-30)
  [2844] Learning about Regular Expressions in C through examples - (2010-06-30)
  [3146] Strings in C - (2011-01-25)
  [3593] Chars, char arrays and strings in C. Some early cautions and pitfalls. - (2012-01-26)
  [3718] Splitting a record into individual data values in C - (2012-05-04)
  [4556] Strings in C - strncmp strncpy and friends - (2015-10-27)
  [4633] String handling in C - new examples of extracting integers from a string - (2016-01-27)


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Python base and inherited classes, test harness and unit testing - new examples
Politics and the railway the connects Wiltshire
My first official measure - Passenger Entrys and Exits - revisited 9 years later
Segmentation Fault, Segmentation Violation, Bus Error, Stack Smashing
Simple C structs - building up to full, dynamic example
Passing arrays into functions in C
Learning to program sample program - past its prime, but still useful
Test Driven Development - a first example of principle in C
Flexible public courses - residential or commuting, programming newcomer or experienced, C or C++
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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