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 Background 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.Tips and short articles on this subject Sharing variables between files of code in C - externFunction Prototypes in C Some new C programming examples - files, structs, unions etc A better alternative to cutting and pasting code Do not duplicate your code Well House Consultants
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Functions, Macros and programs in multiple files
Exercises, examples and other material relating to training module C204. This topic is presented on public courses Learning to Program in C, Learning to program in C++, Programming in C, C and C++ Programming
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 Learning to Program in C, Learning to program in C++, Programming in C, C and C++ Programming Examples from our training material
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
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