1 C++ for beginners Lecture 0 © 2008 Richèl Bilderbeek

2 Question Which kind of programs can be written in C++?

3 Answer Every kind of program

4 Question Which programming style does C++ enforce?

5 Answer None

6 About C++ Developed by Bjarne Stroustrup in 1983 ‘A better C’ (largely) backwards-compatible with C Emphasis on speed Platform independent, but without standard graphics support Many users (but declining in favor of C# and Java)

7 About C++ Multi paradigm language –You are allowed to do everything you want –You want to overload the plus operator to subtract? That's fine –You don't want to program in a const-correct way? That's fine –You don't want to use templates? That's fine –You don't want to use classes? That's fine

8 Question In which ways should your Integrated Development Environment (IDE) (your 'programming program') help you?

9 Answer Depends on your needs But a beginner can use all the help he/she can get!

10 C++ Builder 6 Borland (now CodeGear) IDE Helpful while programming –Function and class browsing Helpful while debugging –Breakpoints, step through code, call stack VCL library for Graphical User Interface (GUI) ('Windows') applications

11 Question Which book is the best book to use for a beginners training?

12 Answer Depends on the trainee –Dutch or English? –Easy read or correct?

13 The book Ammeraal. C++. 6e editie, –Fine Dutch reference –Partly outdated *, due to this sometimes unusual or 'evil' style * The most important books came out later...

14 Question What should be in a training manual?

15 Answer Summary of the treated theory, especially the theory that cannot be found in the book Correction of the book Advice Additional exercises All is in the manual

16 This training Day 1: Basics Day 2: Functions Day 3: std::vector Day 4: Classes Day 5: Polymorphism and inheritance

17 A day of training 9:00 startup up with coffee 9:30-10:30: lecture 10:30-10:45: break 10:45-12:30: to work 12:30-13:15: luch 13:15-14:45: to work 14:45-15:00: break 15:00-16:30: to work

18 Question Which steps are between code and executable?

19 Answer Compiling –Convert code of each unit to object code –Many checks of your code Linking –Connects unit object code to single executable

20 Your compiler is your friend The compiler does many checks on your code The compiler knows how you should write valid C++ The compiler will give you advice in the form of warnings and 'errors' Always compile cleanly

21 'Hello world' program #include //Header file int main() { std::cout //Write to screen << “Hello world” //this text << std::endl; //end line std::cin.get(); //wait for key }

22 Question Can you get a 'Hello World' program to run in C++ Builder 6? What to do if you don't succeed? If you make errors (on purpose), what does the compiler tell you? Can you save and load it? Try!

23 Hint Always first do 'File | Close All'

24 Hint Start a Console Application by –'File | New | Other' –Select 'Console Wizard' –Set 'Source' to C++ –Only leave 'Console Application' checked

25 Hint C++ Builder will create a Project and a Unit for you. Let the filename for the Project start with 'Project', let the filename for the Unit start with 'Unit'. If they are the same you loose either your project (ok) or your code (very bad)