Thursday, 25 December 2014

Use of Continue and Break Keywords in PHP



Well these both keywords continue and break  are very familiar keywords in every programming language and are used vastly in daily programming exercises.  I will explain where these keywords can be used in programming like loops (for loop, while loop, do while loop), and switch case etc.  well both break and continue have very different roles in a program  and there functioning is quite different, I will explain their differences with proper practical examples.

Break keyword and its functioning

In every programming language every keyword have their logical meaning, so as per the logical meaning of break, it means that to break something midway and came out of that thing. Mostly it is used in loops and switch case.  Below is the example with proper explanation and output result of break keyword.

Example 1:-
<?php
For($i=1; $i<=10; $i++)
{
echo  $i;
}
?>
Output result example 1 :--   1 2 3 4 5 6 7 8 9 10
Example 2:-
<?php
For($i=1; $i<=10; $i++)
{
echo  $i;
If($i==5) break;
}
?>
Output result  example 2  :-   1 2 3 4 5
See in example 2  we have used the break keyword in for loop which is printing from no. 1 to 10, and we have used the break keyword on condition when value of variable I will be 5 the loop will break and the control  shifts out of loop. So in example 2 it is printing only upto number 5.

Continue keyword and its functioning

The keyword continue is also used in the loops, but unlike break keyword it is used for continuing the loop. In simple words the point where continue keyword will be used in the loop the loop will not function below that point and continue from there only.  This thing will be more clear by the following example.
Example 3:-                                                                                       
<?php
For($i=1; $i<=5; $i++)
{
echo “hello”;
echo “world,”;
}
?>
Output result example 3 :-  hello world, hello world, hello world, hello world, hello world
Example 4 :-
<?php
For($i=1; $i<=10; $i++)
{
echo “hello”;
If($i>=3) continue;
echo “world,”;
}        
?>
Output result example 4  :-   hello world, hello world,  hello,  hello,  hello

See in example 4 in result it has printed complete hello world only two times and the rest of time it printed only hello.  Because when two times it printed complete sentence hello world, on third time when the if condition becomes true($i>=3), then continue keyword executed and it continued the loop from that point to increment the value of $i=4 and didn’t printed the below statement world.  So in simple words the point where continue keyword will execute the statements below continue keyword in a loop will not be printed.

Friday, 5 December 2014

What Should Be Your First Programming Language?

As a programming language java has some special characteristics that made it prominent. This language is class-based, concurrent and object oriented. Java can run on any java virtual machine. Java family is vast and it is proudly serving with over nine million developers. Google’s preferences in Java for android development certified java’s credibility. This is a clear indication of java’s bright future. This nine million people and world’s admired companies have put their trust in java and they are successful. The scopes of java are increasing.

Java commenced its journey in 1991 and since then it is ruling the path it walked upon. Java was designed for interactive television but it seemed much more developed. So after proper development and renovation it has come in today’s form. Java is dominating programming language and it is in the same page of “C”, “UNIX” type strong language. The reasons behind java’s success are its principles, those are making java a standout and they are as follows:

• Simple, familiar and object-oriented
• Secure and robust.
• Portable and architecture-neutral
• Interpreted, dynamic and threaded
• Supreme performance.



These were the primary goals of java and it has maintained it efficiently. This is how java has taken the programming language into an advanced level. It is platform independent and has vast open source libraries. Rich API and powerful development tools have made java a user friendly and easy to learn. This is why the language offers such career opportunities.

This indicates that java, as a programming language, will surely be beneficial. Being successful in java is not so easy. It requires ethical, dynamic and object oriented consideration like java itself. Proper understanding and training is important to learn this language. Guideline is important too and that can be attained by qualitative training only.

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Java has numerous work opportunities and the career it offers is really amazing. It has been admired in the first world since the commencement and India, being strongly participating in the information and technology ground, is also becoming a vast work place of java family. Above all Webcom has best faculty members who will teach you Java in 6 months/weeks industrial training course.