Functions, Macros and programs in multiple files - C and C based languages module C204
As your code grows from 5 to 50 to 500 lines, it becomes
less managable as a single block. Functions allow code to be
split into more managable blocks, which can then be saved into
separate files if you like so that the same logic can be shared
between a number of different programs where appropriate.
This topic is presented on public courses
Programming in C,
C and C++ Programming
Examples from our training material
| fundy.c | call by value v call by pointer / reference |
| funfiles.c | The home for an extern variable |
| funfuncs.c | use of extern to reference variable held elsewhere |
| makefile | makefile for module C204 |
| tcall.c | Function definition and call |
| tcmain.c | Using functions |
| tcsub.c | Functions in their own file |
| tcsub.h | Using functions - the header file |
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
http://www.training-notes.co.uk.
Topics covered in this module
Defining functions.
Parameters and return values.
Exercise.
Function prototypes.
Variable scope and global variables.
Constants.
Header files and other Macros
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
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 600 books on the subjects on which we teach.
These books are available for reference at our training centre. Also
available is the Opentalk
Forum for discussion of technical questions.