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Introduction

Programming. COMP104: Fundamentals and Methodology. Introduction. Objectives. How to solve a problem (by computer) fundamental problem solving techniques How to design an algorithm algorithm design How to write a program in C++ implementation. Course description. Introduction

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Introduction

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  1. Programming COMP104: Fundamentals and Methodology Introduction

  2. Objectives • How to solve a problem (by computer) fundamental problem solving techniques • How to design an algorithm algorithm design • How to write a program in C++ implementation

  3. Course description • Introduction • C++ basics for Structured (or procedural) Programming • Sequential (assignments) • Branching (if statement) • Looping (while-do statement) • Arrays and algorithms • Functions (local/global, value/ref), recursion • Files • Pointers and dynamic objects • Linked lists • Introduction to OOP (Object Oriented Programming) • Classes, objects • Abstract data types static mid-term dynamic

  4. What can you do after this course? • Program the computer in applications such as the following: • Program a simple calculator • Program simple computer games • Program a simple text editor • Program a small inventory system for a small company • … • You will be ready to take on part-time programming jobs during Xmas break!

  5. Course organization No any prerequisite for comp104! • Lectures (3 h) (office 3506, quan@cse.ust.hk) • Tutorials (1 h) • Not compulsary • Labs (2 h) • Compulsary! See lab policy. • Assignments (homework, 3 projects) But it’s a prerequisite for most of CS courses! Textbook: Programming in C++: Lessons and Applications, by Timothy B. D’Orazio

  6. A typical weekly schedule • Tu Thur Lectures • Sat. Next lab posted on web • Mon-Fri Lab session (students encouraged to demo program by end of lab) • Sat. midnight Deadline for lab by CASS • Course webpage: course.cse.ust.hk/comp104/Password_Only • Print out ‘ppt’ with ‘handouts’ option!!! • Newsgroup, Facebook? • Eclipse tutorial • SVG tutorial

  7. Grading Mark weighting • Labs (10%) • Assignments (25%) • Midterm exam (25%), 6th week, • 9th October, Sat. 1-3pm • Final exam (40%), Dec.

  8. Introduction to Computer Systems • Hardware • Software

  9. Hardware

  10. CPU - central processing unit • Makes decisions, performs computations, and delegates input/output requests • Memory: Stores information • Main memory: RAM, e.g. 256 MB RAM • Secondary memory: hard disk, e.g. 20GB • Input devices • Gets information from the user to the computer • Output devices • Sends information from computer to the user

  11. Work Work Computer Worker Product Product Program Instructions What is a program? A computer program performs a specific task, and may interact with the user and the computer hardware. • Human work model: • Computer work model: A program is a set of instructions

  12. What is a (programming) language? A sequence of instructions • A program needs to be written in a language • There are many programming languages • Low-level, understandable by a computer • High-level, needs a translator! • C++ is a high level programming language A program (in computer language) An algorthm (in human language)

  13. An example: Machine binary language Low-level assembly High-level

  14. Levels of programming language • Machine binary language: unintelligible • Low-level assembly language • Mnemonic names for machine operations • Explicit manipulation of memory addresses • Machine-dependent • High-level language • Readable • Machine-independent

  15. How to translate? A program written in high-level programming language (for example, C++ program) Examples of compilers: • Microsoft Visual C++, Eclipse, g++ COMPILER (for example, Visual C++) A low-level (machine language) program that is understandable by a computer (for example, a PC)

  16. What is a software? The set of all programs or a set of programs • Application software • Programs designed to perform specific tasks and are easy to use • System software • Programs that support the execution and development of other programs Two major types • Operating systems • Translation systems (compilers & linkers)

  17. Common application software: • Microsoft Word, WordPerfect • PowerPoint • Netscape, IE • PhotoShop, Photo-Paint • Quick Time • Operating System (OS) • Windows (DOS, NT, XP, …), Unix (Linux, Solaris, …)

  18. We teach C++, Why? • C++ is one of the most popular languages  • C++ (originally C) • Basic, Pascal, Java, Perl, Cobol, Scheme, Lisp, Smalltalk, Ada, … • C++ is portable (runs on PC, Machintosh, Unix, Mainframes …) • C++ is widely used in industries (almost by everyone)  • C++ is not easy to learn  • The most common versions of C++: • Microsoft Visual C++ • Eclipse • g++ (for Unix machines) C++ C

  19. Programming or Software Development • Editing (to write the program) • Compiling (creates .obj file) • Linking with compiled files (creates .exe file) • Object files • Library modules • Loading and executing • Testing the program debug

  20. Integrated Development Environments (IDE) Combine all of the capabilities that a programmer would want while developing software (VC++, Eclipse) • Editor • Compiler • Linker • Loader • Debugger • Viewer builder

  21. Summary 

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