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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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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.

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C and C based languages module C211
Standard Libraries and other headers
Exercises, examples and other material relating to training module C211. This topic is presented on public courses Learning to Program in C, Learning to program in C and C++, Programming in C, C and C++ Programming, Learning to program in C and C++, C and C++ Programming

If you want to do something and think "surely that's been done before", then it probably has been. C is supplied with a library of standard funcions and header files that save you the need to rewrite many of the basics that you'll need, and we'll introduce you to these standard components in this module. We'll also show you where to find other sources of code that's already written, and suggest that you might like to share your work similarly.
Articles and tips on this subjectupdated
4465Sockets, time handling and keyboard interrupt handling in C
A new example from last week's C course - a simple TCP/IP server that processes one connection at a time, taking a user's input into a "giftbox" and returning the donantion made by the previous person. The scenario is that you may be given wonderful gifts by people - but sometimes they're not wonderful ...
3244C and C++ - preprocess, compile, load, run - what each step is for
C and C++ original source code goes through a number of steps on its way to becoming a runnable program. 1. The C Preprocessor is run on the original source. This takes the source lines that start with a # character and acts on them as directed. (It does a bit more too - more about that anon!) 2. ...
3234Your program - you just provide the filling in the sandwich
You may think (and say) that you're writing a program ... but you never write a complete program these days. What you do is to provide the filling to the sandwich - the bit that changes from one application / requirement to the next, and you then make use of standard surrounding material - the bread. On ...
3148OpenGL / C / C++ - an example to get you started
A Computer Graphics application in C / C++ - that's the coding that one of my delegates is going to be doing for her "real work" after this week's course, and I found myself looking back to old times - when I used (amongst other things) to subcontract to Silicon Graphics to present courses on their GL ...
2575Sharing variables between files of code in C - extern
In C, If you want to share a variable between a number of functions, you can declare it at the top of your file, outside the functions. It's then an element that's held in memory all the time and available to all your functions. Since your functions are separate elements which are joined together at ...
Examples from our training material
abc.h   include file example for cpp.c
bathroom.c   Sharing extern variables - a file of functions
clever.h   Example of included file
cpp.c   C Preprocessor examples
ex1.c   use of #define and #include
first.c   The Sandwich of your application within standard elements
g2.c   Gift server demonstration
hash   Sample preprocessor directives
house.c   Sharing variables between object files - main program
shared.c   First example of shared code
ten.c   Preprocessor directive demonstration
waterhorse.h   extern, and use of preprocessor to control it
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from [here].
Topics covered in this module
The C preprocessor.
stdarg stddef stdio and stdlib.h.
math and limits.h
errno ctype and time.h
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Ruby, Lua, Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 700 books on the subjects on which we teach. These books are available for reference at our training centre.

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