Computer Engineering 2 nd Semester Dr. Rabie A. Ramadan 2

2 Class Rules It will be a tough class, however, Enjoy what you do Do not worry about the exam as long as : You are reading and understanding the materials in the book I do not care how are you going to learn programming language The section will help you to do so but it is your responsibility to dig in the subject

3 Class Rules Attendance is a must Assignments must be delivered on time  no exception whatever the reason. The source code must be submitted with any programming assignment

Class Rules You can bring anything to drink but NO FOOD PLEASE When you come in, DO NOT knock on the door When you want to leave, Do NOT tell me  Just leave but you will counted as absent

5 Class Information Text Books Rabie Ramadan, Computer Engineering for Developers, 2011 Other sources Website

Before We Start …. 25 th of January 25 th of January Be Smart

Programming Language programming language is a tool used by a programmer to give the computer very specific instructions in order to serve some purpose for the user. A program is like a recipe. mix eggs, butter, sugar in a bowl add flour, baking soda, and flavorings mix until creamy add chocolate chips bake in the oven. Can you make chocolate cake out of this recipe ? Can you make chocolate cake out of this recipe ?

Do we need more details ? Yes place two eggs in a bowl add 1.5 c. butter to the eggs.. bake cookies for minutes at 375 degrees or until brown Is there anything missing ?Is there anything missing ? Well, it does not say how to put the eggs shelled or not.Well, it does not say how to put the eggs shelled or not. It adds some illustrationsIt adds some illustrations

Computer Programming Computer does not understand You need to tell it every details Therefore, we have languages to tell the computer what to do.

Is it only one language ? No, There are many languages Each one is designed with a purpose in mind

What is behind the high level language? Computer does not understand the high level language The program must be translated to the machine language Compiler / Interpreter Source Code Compiler / Interpreter Object Code

Compiler/ Interpreter

Why C++? C++ allows expression of abstract ideas C++ is a third generation language that allows a programmer to express their ideas at a high level as compared to assembly languages. C++ still allows a programmer to keep low-level control it has some of the "feel" of an assembly language.

Why C++? C++ has national standards (ANSI) Code written in C++ that conforms to the national standards can be easily integrated with preexisting code. C++ is reusable and object-oriented C++ is widely used and taught

Structure of a program

Line separation

Multiple instructions

Type of Structuring

Comments

C++’ Names The name of a variable: Starts with an underscore “_” or a letter, lowercase or uppercase, such as a letter from a to z or from A to Z. Examples are Name, gender, _Students, pRice Can include letters, underscore, or digits. Examples keyboard, Master, Junction, Player1, total_grade, _Score_Side1

C++’ Names Cannot include special characters such as !, %, ], or $ Cannot include an empty space Cannot be any of the reserved words Should not be longer than 32 characters (although allowed)

Reserved keywords

Data Types A Byte

Data Types Character

Data Types \

Reading Assignment 26 Please Read: Program Structure, Variables, Data Types, and Constants Operators and Operands Basic Input/Output