C++ Lesson1(Compiler)

C++ is a language of computer's programming

if you want to try your abilities download DevC++

First of all , your pc understands dyadic system ...Programm's text (commands/orders) bust be changed to 0 and 1(source file).so when Operating System is installed , compiler is installed too.This "program' takes source file and turns it to object ..But it's not executable cause it need additional information.It takes them from the libraries and the connection between them and object is achieved by another program , that is called linker .After this step the executable program is created and is ready to run

<<<<-- an e.g

STEPS

• sourse file

• Compiler

• object

library

• linker

• exe

Source program -> grade.cpp --> Cpp is the extension of sourse file and shows that this file includes a program in C plus plus

Executable-> grade.exe--> it can run..

SQL ->DATA TYPES

IN A SQL SERVER WE CAN FIND MANY TYPES OF DATA:

1. STRINGS

• char [ ( n ) ]

Fixed-length, non-Unicode character data with a length of n bytes. n must be a value from 1 through 8,000. The storage size is n bytes. The ISO synonym for char is character.

• varchar [ ( n | max ) ]

Variable-length, non-Unicode character data. n can be a value from 1 through 8,000. max indicates that the maximum storage size is 2^31-1 bytes. The storage size is the actual length of data entered + 2 bytes. The data entered can be 0 characters in length. The ISO synonyms for varchar are char varying or character varying.

• nchar [ ( n ) ]

Fixed-length Unicode character data of n characters. n must be a value from 1 through 4,000. The storage size is two times n bytes. The ISO synonyms for nchar are national char and national character.

• nvarchar [ ( n | max ) ]

Variable-length Unicode character data. n can be a value from 1 through 4,000. max indicates that the maximum storage size is 2^31-1 bytes.

2.TIME DATE

Datetime its about date and time 4 byte for date and four for time

3)NUMBER

• decimal[ (p[ , s] )] and numeric[ (p[ , s] )]

Fixed precision and scale number When maximum precision is used, valid values are from - 10^38 +1 through 10^38 - 1. The ISO synonyms for decimal are dec and dec(p, s). numeric is functionally equivalent to decimal.

4)FLOATS

• float Depends on the value of n 8 OR 4 BYTES

• real 4Bytes
• 5) INTEGER
  
  

• bigint 8 Bytes
• int 4 Bytes
• smallint 2Bytes
• tinyint 1 Byte

......................ABOUT MONEY ...................

• money 8 bytes

• smallmoney 4 bytes

Welcome to my blog!!!

Hello everyone
I decided to create a new blog about computer programing...so i am thinking to write some articles about web designing , programing, data bases, etz. on my opinion reading these articles a beginner will manage to "speak these languages, and made programs ....then he will be able to extend his knowledge

ha ha ha !!!!!

see you