C and C based languages - A first practical program

C and C based languages module C202

A first practical program

Exercises, examples and other material relating to training module C202. This topic is presented on public courses Learning to Program in C, Learning to program in C++, Programming in C, C and C++ Programming

Background

Programs store information in variables, and we'll look at how these are declared, initialise and used for calculation in C. We'll also look at reading inputs from the user and writing information back out so that by the end of this module you'll have written a simple but practical program in C.

Articles and tips on this subject		updated
3590	Defining, declaring and initialising variables in C When you declare a variable in C, you're instructing the compiler to set memory aside for it, and you're also telling the compiler how to handle any references to that memory. • C does NOT spend time working out what sort of data you're storing and how many bytes are needed - it's up to you to ...	2012-01-28
3236	C - a first program that does something useful for you Any language has a whole number of different types of element that come together to make a whole. Let's take a spoken language such as English. You need nouns - they're 'thing' words like "platypus" and "road", "carrot" and "Walter". Then you need verbs to join them together - they're 'doing' words ...	2011-04-09
3121	New year, new C Course Well - not completely a new course. New delegates, and lots of new examples written for them during the first day to that they can see not only WHAT work but also HOW the design of what works is put together during the day. Click on the individual source code examples, and you'll find programs to ...	2011-01-08
2580	C course inspires new teaching examples If you're reading this article as one of a series in my blog, looking for amusing anecdotes, and news of Melksham, you may be getting a bit concerned at the long series of articles on C and C++. This week, I was at meetings at Well House Manor on Tuesday evening, the divisional police HQ on Wednesday ...	2010-06-23
888	Turning C from source to a running program With scripting languages (or near-scripting languages) such as shell, Tcl, Perl, Python and PHP, the developer just edits a file of program code, and tests it - the tools that he uses roll the translation of his source into something that can be run without him having to make further inputs. C is somewhat ...	2006-10-06

20e2

Examples from our training material

adder.c	Variables and arithmetic in C
calcit.c	First calculation
cvopt.c	Prompt - read - calculate - decide - report
fred.c	Calculation of VAT on an amount
makefile	makefile for module C202
nranges.c	Testing number ranges in C
second.c	Read, Calculate, output results
tconv.c	Temperature conversions
vars.c	Delaring but not initialising - what happens?
vars2.c	Declaring and initialising variables

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

Variables, types and numeric types.
Float and ints. Short long and double.
Calculations.
Basic use of printf.
Exercise.
Input from the user.
Conversion and type casting.
Multiple assignments.
Exercise.

Complete learning

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