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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
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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