1. Computer Programming (CS-161)By
Saqib Rasheed
Lecture # 1

2. Instructor Saqib Rasheed Email: saqib.rasheed@mail.au.edu.pk
Office: A-Block, 2nd floor
Office Hours:
02:30PM to 03:30PM
from Mon to Thur

3. Course Lab Engineer Mr. Zohaib / Mr. Omer
Never hesitate to contact Lab instructors or me whenever you have some problem

4. Some Rules There is only one rule that will make the rest of the rules
Raise your hand before asking any question and then WAIT for the permission
Never sleep in the class
Always communicate in the official communication language

5. Pre-Requisites
Nothing

6. Books
Object-Oriented Programming in C++”, 4th edition by Robert Lafore
C++ How to Program”, 4th Edition by Deitel & Deitel PDF

7. Projects/Assignments
Deadlines are always final
Plenty on late submissions
Submission guidelines must be followed.
Do not submit compressed files.
Submissions by will NOT be accepted

8. Quizzes
Announced
Unannounced
After the end of each topic

9. Dishonesty, Plagiarism in Quizzes, Assignments & Projects
All parties involved in any kind of cheating in any exam/quiz or copying assignment will get zero in that task
Both parties in case of copied assignments

10. Evaluation Breakdown Assignments 10 Quizzes Lab 20 Sessional Final 40
Total
100

11. Course Execution Two lectures of one hour & two hours every week
1 lab every week
Group Home Page:
CR of Class will make a yahoo group

12. Guidelines
Read your and messages on the course yahoo group regularly
Start working on projects/assignments from first day.
Remain attentive during the class. Do not sleep and do ask questions.
I will ask questions very often!

13. Course Outline In this course you will learn C++
Structured programming
Complete Course outline will be uploaded on yahoo group

14. Computers Have Two Main Parts
Computer Hardware
Computer Software

15. What is Computer Hardware?
Computer Hardware is the physical part of the computer system, the machinery and equipment

16. Computer Software's
Computer Software are programs that tell the computer what to do.

17. Input Devices
Mouse
Keyboard
Scanner
Mic

18. Output Devices
Monitor / LCD
Printer
Speakers

19. Making a Computer

20. What is a Computer? Computer Hardware Software
Device capable of performing computations and making logical decisions
Computers process data under the control of sets of instructions called computer programs
Hardware
Various devices comprising a computer
Keyboard, screen, mouse, disks, memory, CD-ROM, and processing units
Software
Programs that run on a computer

21. How to Communicate with computer?
Computer understands its own machine language (language of 0s and 1s).
Language instructs computer to perform tasks.
We need to understand computer’s language to communicate with it and to make it perform our desired functions.
So we have….

22. Programming Language
Set of rules and symbols used to construct a computer program
A language used to interact with the computer

23. Machine Languages, Assembly Languages, and High-level Languages
Three types of programming languages
Machine languages
Strings of numbers giving machine specific instructions
Example:
Assembly languages
English-like abbreviations representing elementary computer operations (translated via assemblers)
LOAD BASEPAY
ADD OVERPAY
STORE GROSSPAY

24. Machine Languages, Assembly Languages, and High-level Languages
Three types of programming languages (continued)
High-level languages
Codes similar to everyday English
Use mathematical notations (translated via compilers)
Example:
grossPay = basePay + overTimePay

25. What is C
C is a programming language developed at AT & T’s Bell Laboratories of USA in 1972.
It was designed and written by a man named Dennis Ritchie.
Influenced by
ALGOL 60 (1960),
CPL (Cambridge, 1963),
BCPL (Martin Richard, 1967),
B (Ken Thompson, 1970)

26. What is C….. Used to develop UNIX
Used to write modern operating systems
Hardware independent (portable)
C began to replace the more familiar languages of that time like PL/I, ALGOL, etc
Because it is reliable, simple and easy to use.

27. Steps in C/C++

28. The C++ Character Set
A character denotes any alphabet, digit or special symbol used to represent information.
We have 32 special symbols

29. Constants, Variables and Keywords
The alphabets, numbers and special symbols when properly combined form constants, variables and keywords.
A constant is an entity that doesn’t change.
Whereas a variable is an entity that may change.

30. Types of C Constants
C++ constants can be divided into two major categories:
Primary Constants
Secondary Constants
These constants are further categorized as shown in Figure

31. Program Errors Syntax errors
Related to the error in grammar/syntax of a language
Run time errors
during execution
indicate bugs
example: un-handled exceptions, memory overrun.
Logical errors
Bug in program that causes program to operate incorrectly, but not terminate.

32. Tools of the trade
Editor
Interpreter and Compilers
Debuggers

33. Integrated Development Environment (IDE)
It contains
Editor
Compilers
Debugger
Linkers
Loaders

34. Loader puts program in memory.
Preprocessor program
processes the code.
Loader puts program in memory.
CPU takes each
instruction and executes it, possibly storing new data values as the program executes.
Compiler creates object code and stores it on disk.
Linker links the object
code with the libraries
Loader
Primary Memory
Compiler
Editor
Preprocessor
Linker .
Disk
CPU
Program is created in the editor and stored on disk.