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C Development # Rob Miles Edition 1.1 October 2009 Department of Computer Science University of Hull .Contents Introduction. 11 Welcome . 11 Reading the notes 11 Getting a copy of the notes . 11 Computers 12 An Introduction to Computers 12 Hardware and Software 12 Data and Information 13 Data Processing 13 Programmer’s Point:At the bottom there is always hardware . 14 Programming Languages 15 What is Programming? . 15 From Problem to Program 15 Programmer’s Point:The specification must always be there . 16 A Simple Problem . 16 Specifying the Problem. 16 Programmer’s Point:metadata is important . 17 Programmer’s Point:Good programmers are good communicators 19. | C Development Rob Miles Edition 1.1 October 2009 Department of Computer Science University of Hull Contents Introduction.11 Welcome.11 Reading the notes.11 Getting a copy of the notes.11 Computers 12 An Introduction to Computers.12 Hardware and Software.12 Data and Information.13 Data Processing.13 Programmer s Point At the bottom there is always hardware.14 Programming Languages 15 What is Programming .15 From Problem to Program.15 Programmer s Point The specification must always be there.16 A Simple Problem.16 Specifying the Problem.16 Programmer s Pointmetadata is important.17 Programmer s Point Good programmers are good communicators.19 Programming Languages.19 Programmer s Point The language is not that important.20 C 20 A look at C .20 Dangerous C.20 Programmer s Point Computers are always stupid.21 Safe C . .21 C and Objects . 21 Making C Run . 21 Creating C Programs . 22 The Human Computer.22 Programmer s Point Great programmers debug less.22 What Comprises a C Program .22 Controlling the Compiler . 23 Storing the Data . 23 Describing the Solution.23 Identifiers and Keywords. 23 A First C Program 24 The Program Example.24 using System .24 class GlazerCalc.25 static.25 void.25 Main.25 .25 i .26 double.26 width height woodLength glassArea.26 Programmer s Point Know where your data comes from.26 . 26 string widthstring heightstring .27 widthstring .27 Console.27 ReadLine.27 .27 .28 width .28 double.28 Parse.28 widthString .28 heightString Console.ReadLine height double.Parse heightString .29 woodLength 2 width height 3.25 .29 glassArea 2 width height . 29 Console.WriteLine . 29 . 29 The length of the wood is . 29 . 29 woodLength.30 feet .30 . 30 .31 .31 .31 Programmer s Point Program layout is very important.31 Punctuation.31 Manipulating Data 32 Variables and Data.32 Types of Variables.32 Storing Numbers. 32 Storing integer values.33 Programmer s Point Check your own maths.33 integer literal values.34 Storing real values.34 real literal values. 34 Programmer
