Introduction to C++

2012-02-12T17:03:00.000-08:00

Brief History of the C++
C++ is the most widely used programming language in the world today and it was developed by Bjarne Stroustrup at Bell Labs in 1985. The C++ is an object oriented programming language, mainly an extension of the C Programming Language, which was also developed at Bell Labs. C++ was designed for the UNIX operating system. Stroustrup's purpose for creating C++ was to make writing programs easier for the programmers.

Let's Begin
Before learning the language you must know the following:

Understand the diagram of a Computer System.

Description of the diagram of a Computer System - Input, information or data, is sent to the CPU, which can be processed and become an output. This information can be saved or stored through Memory Storage. From storage and memory information can be sent to an output device. Information can be brought from storage or memory to the CPU.

What is Input/Output?
Input is data or information
Output is the processed information, result, answer, solution, conclusion, or outcome.

What is a Program?
A Program is a set of instructions to solve a program using computer language, such as C++.

What is a flowchart?
Flowchart is a set of instructions to solve a program using symbols. You can create a flowchart in Raptor a flowchart-based programming environment.

What is a Algorithems?
Algorithems is a set of instructions to solve a program using English language.

What is a Pseudo-Code?
Pseudo-Code is a set of instructions to solve a program using English and Computer Language.

* Algorithms come first followed by a Flowchart, followed by Pseudo code and then you can create the Program.

What are Keywords/Reserved Words?
Key words are reserved words. They have specific uses in the language already. Example include; If and Return. Blue words are reserved and keywords.

What are Comments?
Comments are words that you write to help you understand the program that are not part of the program. If someone reads your comments they should be able to understand your program. Comments show up as green.

What is a Compiler?
Compiler is a program that takes your program as input. The compiler runs the program and looks for any errors in the program, if there are any. Below is a Diagram of a Compiler.

Types of Errors you may encounter while programming.
1. Syntax error: Ex. If you forget a comma
2. Run time error: When the program is halt, stopped. Ex. When an operation has divide by zero the program will stop.
3. Logical error: The computer cannot help you to find a logical error. Ex. Sum of 5+9 "14" output: "45" There's a mistake, Instead of adding it multiplied. You need a person to fix a logical error not a computer.

Make sure you know all the stuff above before you begin to learn the language and go to the next post.

Introduction to Computer Systems | Class Notes

2012-01-28T17:41:00.000-08:00

Course also known as "Fundamentals of Computer Systems" is one of the core computer science courses that gives you an overview of machine architecture, software development, software engineering, data organization, ethics, computer security, and the theory of computing.

Course Outline
- Converting numbers between bases, e.g. binary to decimal, decimal to hex etc

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Introduction to C++

Introduction to Computer Systems | Class Notes