Object-oriented programming in C++

Transcription

1 Object-oriented programming in C++ ELEC-A7151 Kick-off Pasi Sarolahti

2 Agenda Course arrangements Introduction to materials and exercises Tools used in the course

3 Your expectations about the course Discuss with your neighbour(s) what do you expect from the course (2 min) Why do you want to participate? What would you like to do during the course? What would you want/need to learn?

4 What to learn? Object oriented programming Software development as group project Structuring of larger programs (modularisation, information hiding, designing interfaces) Communicating and organising the software work Use of external libraries Git C++ language and its properties

5 What is object-oriented programming? Passenger Name Birthdate LicenseID getname() getage() eligibletodrive() Car Regnumber n 1 Model Speed n 1 Accelerate() PickUp() getregnro() Garage Name Capacity Rent drivein() driveout() collectrent() Jack Reino Anne XYH-521 YVU-507 Donald s Garage Tiina CPP

6 What C++? Extension to C language Development started in late 1970s ( C with classes ) Developer: Bjarne Stroustrup C++ compiler can build a C program (with minor exceptions) Bring object-oriented features to C language and several other extensions Used in various places (from games to embedded systems) The language is under continuous evolution 6

7 C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do it blows your whole leg off. 7

8 C++ is a horrible language. 8

9 Sofware implemented in C++ Google Chrome Windows operating system, Office, Visual Studio, IE Adobe Photoshop, Illustrator, etc. Firefox, Thunderbird MySQL Several game engines (e.g. Unreal Engine) Control software for mobile communication networks Graphics modeling (e.g. Maya 3D) Symbian OS 9

10 C vs C++ 10

11 Some differences C vs. C++ Classes and object-oriented programming Based on C structures Reference variables and smart pointers Traditional pointers have smaller role in C++ than C Overloading operators and functions + or >> are not necessarily what they seem Function with same name can have several argument lists Namespaces: hierarchic scopes for name visibility Extensive standard library for data structures, algorithms, etc. 11

12 Sample C++ program #include <list> #include <string> #include <iostream> #include <algorithm> int main() { std::list<std::string> starks = { "Bran","Arya","Sansa","Rickon","Robb" }; auto it = find(starks.cbegin(), starks.cend(), "Arya"); if (it!= starks.end()) std::cout << "Found: " << *it << std::endl; else std::cout << "Did not find" << std::endl; } 12

13 General Course Structure Period I Programming exercises (45% of grading) 5 modules, deadlines on one-week intervals At least 50 points in at least 3 modules (max 100 pts / module) Period II Programming project (45% of grading) Groups of 4 students Kick-off: October 19 at 14:15 in AS2 Deadline December 14 Review and commenting other projects: 10% of grading 13

14 About material No lectures (except this, and project kick-off) Content will be available at tim.aalto.fi Summary of main course topics - Aims to cover information needed for exercises - C++ has many features, we are not covering them all Additional reading highly recommended, for example: - Books (C++ Primer, The C++ Programming Language) - cplusplus.com 14

15 Practicalities on Exercises Material in web-based environment Combines material and submission of exercises - Automatically checked Allows playing with the examples inline in the editor All testing happens at server No need to install anything else but C++ compiler and debugging tools However, many tests have zip package containing tests You can work on the exercises on your own machine

16 Getting help on exercises Exercise sessions in Maari-C Tuesday Thursday Friday Slack team: Everyone can be an assistant You can share your submission link when asking for help Once you complete an exercise, you can help others 16

17 Demo

18 About project Kick-off on Fri, October 19 at 14:15 in AS2 Done in groups of four We will provide topics, you can propose your own Practice software project skills How to coordinate within group How to design the software Using version management systems (git) Group will get a grade, with individual adjustments if needed More information at the kick-off lecture and MyCourses 18

19 Project topics from previous courses Ray Tracer Minebombers Hillside racing Sanajahti-solver Artillery game Settlers Q learning Tower Defence Micro machines Nethack / Rogue Laser Squad Network Simulator Angry Birds Traffic Simulator

20 Constraints on project topics (Own topic may be accepted, but ) Overall time: roughly six weeks Must run standalone in Ubuntu Linux (16.04) machines All needed libraries must be easily and freely accessible If you work on e.g. Visual Studio or Xcode, verify it works also on Ubuntu I work for employer X, can my project be part of our product Y Answer: No Project groups always have four (or exceptionally five) members

21 Help needed with project topics What would you like to work on as a course project? Remember the constraints

22 Next steps First exercises are open First exercise session at Maari-C: Tuesday, September 18 First deadline: Friday, September 21 Project kick-off: Friday, October 19 22