csci 271 part 2

Question 0

Windows, unix, Linux, and Mac OS X.

Answer 0

Operating systems

Question 1

C++ programming language is a

Answer 1

High level language

Question 2

Standard c++

Answer 2

ANSI/ISO c++ agreed upon version that is portable to any platform and any development environment.

Question 3

What is ANSI and ISO

Answer 3

ANSI- American national standard institute

ISO - international standardization organization

Question 4

What is an IDE

Answer 4

A software application that provides comprehensive facilities to computer programmers for software development

Question 5

An IDE consist of

Answer 5

Code editor

A compiler

A debugger

A graphic user interface builder

Question 6

What is a compiler

Answer 6

(Library with useful function) is translator programs that convert high level language programs into machine language.

Function- a block of code that performs one or more tasks, such as adding two numbers or printing to the screen.

Question 7

// Ernst Hyacinthe, 09/12/04 
// text-printing program

include <iostream></iostream>

Int main ()

{

Std::cout«“hello world”\n;

Return 0;

}

Answer 7

This is the compiler screen with the c++ programming

Line one and two are the comment screen
Comments does not effect the operation

Question 8

What is Linux

Answer 8

Open source source software development and free operating system. It can be freely distributed, downloaded freely, distributed through magazines, books etc.

User can be everyone from home users to developers.

Question 9

What is an unix

Answer 9

Operating system used in Internet servers, workstation & PCs. Backbone of the majority of financial infrastructure. Developed by AT&T at bells labs and Dennis Ritchie. Written in C language.

Manufactured by
IBM, HP, AND MAC OS.

FILE SYSTEM SUPPORT
JFS, GPFS, HFS, HFS+, UFS,XFS,ZFS FORMAT

Disadvantages are
Users have to wait for awhile to get the proper bug fixing patch.

Processors are

X86/x64, 
Sparc,
Itanium,
Pa-RISC,
PowerPC

Question 10

Definition: Computer? computer-program?

Answer 10

A computer is a device capable of performing computations and making logical decisions at speeds millions (even billions) of times faster than human beings can.

Question 11

Computer Programs

Answer 11

Computers process data under the control of sets of instructions called computer programs.

Question 12

What are the Computer Organization Six key logical units.

Answer 12

Six key logical units are
- Input unit
- Output unit
- Memory unit (Memory)
- Arithmetic and logic unit (ALU) - Central processing unit (CPU) - Secondary storage unit

Question 13

Input Unit is

Answer 13

The “receiving” section which obtains information (data and computer programs) from input devices and places it at the disposal of the other units so that it can be processed.

Question 14

Comments. “//………………. “ -

Answer 14

Do not affect the operation of the program; Ignored by the compiler

Enhance the readability of the source code

Question 15

Line 3. “ # include <iostream> " —— Preprocessor directive.</iostream>

Answer 15

Preprocessor directive.

Question 16

main function. • Every C++ program has a main() function. • The function main() is called

Answer 16

by operating system automatically when program starts. • The function main() always return int, e.g. 0 (signal for success).

Question 17

Every C++ statement must be ended with a

Answer 17

semicolon ;.

Question 18

main function must be ended with

Answer 18

return 0;

Question 19

Declaration statement

Answer 19

Tells the compiler what variable you going to use.
one you declare a variable it tells the compilers what variable you going to use

any variable has to be declare before being you use.

Question 20

executable statement

Answer 20

performs actions and tasks

Question 21

A variable is a

Answer 21

location in your computer’s memory in which you can store a value and from which you can retrieve that value.