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Data Type in C Language-tccicomputercoaching.com

What is Data Type and Why Data Type Need?

In programming there are different types of data used for example 987,876.34, xyz, Hello World, %, # etc.

DataType-in-C_simple

As a human being we can differentiate that these all data are different but machine can’t differentiate data, so, to differentiate data they have been categorized in different categories which are called data type.

ANSI C provides three types of data types:

1. Primary (Built-in) DataTypes:

void, int, char, double and float.

2.Derived DataTypes:

Array , References, and Pointers.

3.User Defined DataTypes:

Structure , Union, and Enumeration.

1. Following are Primary Data Types in C:

  • void
    – means nothing. void is always used with main function. That mean void
    function does not return any value.
  • int
    – 0-9 digit (combination) i.e. 99999 , 10 , 0 , 23456
  • float
    – Real Number i.e 78.91
  • char
    -There are 4 sub categories:

o 0-9

o a-z

o A-Z

o other symbols

  • Note: character contains only single value
  • string
    – Is collection of character but C language does not allow to declare
    string as a data type.

Data Type is always used in variable declaration in beginning in void main.

data type name;

For example,

int rollno;

float salary;

char code;

2. Following are Derived Data Types in C:


Derived Data type is based on Primary data type.

Arrays – Arrays are sequences of data items having homogeneous values.

References – Function pointers allow referencing functions with a particular signature.

Pointers – These are powerful C features which are used to access the memory address

3. Following are User Defined Data Types in C:

C allows the feature called type definition which allows
programmers to define their identifier that would represent an existing
data type. There are three such types:

  • Structure

It is a package of variables of different types under a single name. This is done to handle data efficiently. “struct” keyword is used to define a structure.

  • Union

These allow storing various data types in the same memory location. Programmers can define a union with different members, but only a single member can contain a value at a given time.

  • Enum

Enumeration is a special data type that consists of integral constants, and each of them is assigned with a specific name. “enum” keyword is used to define the enumerated data type.

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Loop in C Language – tccicomputercoaching.com

What is Loop in Programming?

To write once, but execute more than one time is called Loop in Programming. This will save time of developer to write n time.

Loop-C-Language_simple

3 type of Loop:

  • for
  • while
  • do-while

We see one by one in detail.

There are 3 sections in each loop:

there is loop variable i/j

1. initialization i=1 or i=10

2. condn check i<=10 or i>=1

3. update (++ or –) i=i+1 or i++ i–

e.x. We want to print 10 time “hello world”. Then what is the syntax in coding?

Let us see.

1. for loop

for (i=1;i<=10;i++)

{

Printf (“hello world\n”);

}

Here, all 3 sections are in same statement. First initialization executed always. Then control goes to the condition checking. If condition is true then only control entered into the loop and statement inside the loop will be executed. Then control goes to the updating, again condition checking , and same process will continue until condition will be false.

2. While Loop

i=1;

while(i<=10)

{
printf (“hello wolrd\n”);

i++;

}

Here , initialization is outside of Loop. Then control goes to the condition checking. If condition is true then only control entered into the loop and statement inside the loop will be executed. Then control goes to the updating, again condition checking , and same process will continue until condition will be false.

3. do -while Loop

i=1;

do

{

printf (“hello wolrd\n”);

i++;

} while (i>=10);

Here, also initialization is outside of Loop. But in this Loop condition is last , so control direct enter into the loop and one time statement inside the loop will be executed. Then updating and last control rich to the condition checking. If condition is true then control again entered into the loop , and process will be continue until condition will be false.

Thus , Do – While loop is different than previous two loop. Here condition is last , so , if condition is false yet output will execute one time. When in previous two loop condition is false then output will not execute once.

Second difference is : in do-while there is semi colon at last.

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What is SQL? What is an Importance of SQL? tccicomputercoaching.com

What is SQL ?

SQL stands for Structured Query Language. SQL is a language for interacting with data in a database. SQL works following:

Create, Putting data into tables. Read Query data out of a table. Update Change data already in a table .Delete Remove data from the table.

what-is-SQL_simple

What is an Importance of SQL?

SQL helps a user program to update the computer database by removing old data, modifying hitherto stored data, and adding new data.

It works by understanding and analyzing databases that include data fields in their tables. For example, we can take a large organization where a lot of data have to be stored and managed.

SQL DDL provides commands for defining relation schemas, deleting relations, modifying relation schemas. SQL includes commands for beginning and ending the transactions.

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Why is C programming language called C? tccicomputercoaching.com

is a middle level programming language developed by Dennis Ritchie while working at AT&T Bell Labs in USA.

The objective of its development was in the context of the re-design of the UNIX operating system to enable it to be used on multiple computers.

C programming language

Earlier the language B was now used for improving the UNIX system. Being a high level language, B allowed much faster production of code than in assembly language.

Still, B suffered from drawbacks as it did not understand data-types and did not provide the use of “structures”.

1

To overcome the drawbacks Dennis Ritchie develop a new programming language called C.

C language is not tied to any particular operating system. It can be used to develop new operating system.

The C programs are efficient, fast and highly portable. i.e. C programs written on one computer can be run on another with more or almost no modification.

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Know more in detail about Java compiler – tccicomputercoaching.com

Java Language

The Java language has its own structure, syntax rules, and programming paradigm like any programming language. The Java language’s programming paradigm is based on
the concept of OOP, which the language’s features support.

java compiler at tcci

Java Compilation

When you write program for the Java platform, you write source code in .java files and then compile them. The compiler checks your code against the language’s syntax rules, then writes out byte code in .class files. Byte code is a set of instructions targeted to run on a Java virtual machine (JVM). In adding this level of abstraction, the Java compiler differs from other language compilers, which write out instructions suitable for the CPU chipset the program will run on.

Let’s Follow these steps how to save the file, compile and run the program.

  • Open notepad and add the code to print “Hello World” as an output.
  • Save the file as: MyFirstJavaProgram.java.
  • Open a command prompt window and go to the directory where you saved the class. Assume its C:\.
  • Type ‘ javac MyFirstJavaProgram.java’ and press enter to compile your code. If there are no errors in your code, the command prompt will take you to the next line (Assumption: The path variable is set).
  • Now, type ‘ java MyFirstJavaProgram ‘ to run your program.
  • You will be able to see ‘ Hello World ‘ printed on the window.

C :\> javac MyFirstJavaProgram.java

C :\> java MyFirstJavaProgram

Hello World

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Applications of Advance Java – tccicomputercoaching.com

Java is open, fast, powerful, runs on any platform, and there are more jobs for Java than any other programming language. Advanced Java is an extension of Java used for developing and running enterprise software and large-scale multi-tiered, scalable, reliable and secure network applications.

advanced java

There are following Editions of Java.

Java Standard Edition (J2SE/JSE)

Java Enterprise (J2EE/JEE)

Java Micro Edition (J2ME/JME)

Core Java is connected with Java Standard Edition (J2SE/JSE). Advance Java connected with Java Standard Edition (J2SE/JSE) – JDBC and Java Enterprise (J2EE/JEE) – servlet & JSP.

What is the Need of to learn Advance Java?

In Java there are 3 types of Application:

1. Stand alone Application

2. Web Application

3. Enterprise Application

Core java is used to develop Stand Alone Application. But to develop Web Application , Enterprise application we need to learn Advance Java.

Advance Java mainly contains JDBC, Servelet, and JSP.

  • Desktop GUI Applications: Java provides GUI development through various means like Abstract Windowing Toolkit (AWT), Swing and JavaFX. …
  • Web Application: Java provides support for web applications through Servlets, Struts or JSPs. The easy programming and higher security offered by the programming language has allowed a large number of government applications for health, social security, education and insurance to be based on Java.
  • Enterprise Applications: Java Enterprise Edition (Java EE) is a popular platform that provides API and runtime environment for scripting and running enterprise software, including network applications and web-services.

In conclusion, Java is widely applicable across different types of applications.

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What is URLConnection class in Java? tccicomputercoaching.com

The Java URLConnection class represents a communication link between the URL and the application. This class can be used to read and write data to the specified resource referred by the URL.

The URLConnection class contains many methods that let you communicate with the URL over the network. URLConnection is a HTTP-centric class; that is, many of its methods are useful only when you are working with HTTP URLs.

java urlconnection

However, most URL protocols allow you to read from and write to the connection.

For run the programme related URL Connection you should know some built-in methods like,

  • URLConnection openConnection(): opens the connection to the specified URL.
  • OutputStream getOutputStream(): returns the output stream to this connection.
  • InputStream getInputStream(): returns the input stream to this open connection.

Steps involved in the above process:

1. URL Creation: Create a URL object using any of the constructors given int

2. this article

3. Create Object: Invoke the openConnection() call to create the object of URLConnection.

4. Display the Content: Either use the above created object to display the information about the resource or to read/write contents of the file to console using bufferedReader and InputStream of the open connection using getInputStream() method.

5. Close Stream: Close the InputStream when done.

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Computer engineering coaching tccicomputercoaching.com

In the current world, it’s almost impossible to imagine that someone can live without computers.

That’s why Computer Engineering is best choice in current days which provides many opportunities for Job in IT field. There so much to learn today and the material for the same is easily available. The programs and applications are only as smart as the  person who coded it is.

computer engg

Learn any programming language at TCCI Computer Coaching Institute:

Java, Python, .Net, C, C++, SQL, HTML, PHP, C#, System Programming, Compiler Design, CSS, JavaScript, DBMS.

Any of these. Here are numerous different fields of expertise in Programming.

TCCI conduct Online and Offline both class for every Programming Languages.We teach all subjects of this stream including University of Nirma, Indus, Gujarat Technological, GU,DDIT, PDPU, Changa etc…..)

Lectures conducted by Expert Faculties at your comfortable schedule at TCCI. You can get the Best knowledge in your field through our Experienced Faculties.

Course Duration: Daily/2 Days/3 Days/4 Days

Class Mode: Theory with Practical

Learn Training: At student’s Convenience

You can attend Free Demo Lecture and join us @ TCCI.

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Where Data Structure is applied in real World? tccicomputercoaching.com

Data Structure is used to store data in proper format.

Following are real Examples of Data Structure.

Data-Structures-and-Algorithms

  • To store a set of programs which are to be given access to a hard disk according to their priorit.
  • For representing a city region telephone network.
  • To store a set of fixed key words which are referenced very frequently.
  • To represent an image in the form of a bitmap.
  • To implement back functionality in the internet browser.
  • To store dynamically growing data which is accessed very frequently,
    based upon a key value.
  • To implement printer spooler so that jobs can be printed in the order of
    their arrival.
  • To record the sequence of all the pages browsed in one session.
  • To implement the undo function in a text editor.
  • To store information about the directories and files in a system.
  • You have to store social network “feeds”. You do not know the size, and
    things may need to be dynamically added.
  • You need to store undo/redo operations in a word processor.
  • You need to evaluate an expression (i.e., parse).
  • You need to store the friendship information on a social networking site
    i.e., who is friends with who.
  • Graphs, they are key DS which are of almost importance. When you are
    using Google maps, finding a shortest route between two landmarks (nodes)
    is clearly a Algorithm on graphs.
  • Queues,they have Lilo or fifo property. So we can think of a ticket
    counter problem. And we can also think of a pile of work to be done by
    their order of equal preference
  • Trees, one example can be taken as the folder hierarchy on your computer
    disk. These are maintained and ordered internally by tree DS.

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What is a better virtual server: Linode, Slicehost, Rackspace or Amazon EC2?

For hosting small applications Linode is better idea and it works very well with S3. I have tried EC2 and Rack space in past and I always had performance issues with them (unresponsive servers because someone else is eating your resources). I think Linode is quite optimized for better performance and especially they never oversell the resources.

Virtual server

 

They offer library of Stack Scripts which makes your life easier, and within no time you can have full server running with all installations (LAMP, WP, Rails etc). They offer best value for money as far as I know.

Enough benchmarks showing that equivalent plans are Linode are faster as well as cheaper. That said, it’s been about a year and a half since I looked at that, so I don’t know if things still stand that way now.

Conclusion is that some user use Linode, someone use Slice host, someone use EC2 or Rack space. Performance of all servers are good but it depends on user’s requirement and use. So , all servers are Good .

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