Here echo is used to print something in output console. $ is used with variable, in PHP all variables are precedes with $ sign, you have to use $ with all variables. Every line of code must be ended with semicolon (;). Note that every PHP Script must start with <?php and ended with ?>, this means whole script must be written between <?php …. ?>. <?php $a= "Hello World!"; echo $a."<br>"; ?> OutPut Hello World!
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Learning C++ programming can be simplified into: Writing your program in a text-editor and saving it with correct extension(.CPP, .C, .CP) Compiling your program using a compiler or online IDE The “Hello World!” program is the first step towards learning any programming language and also one of the simplest program you will learn. All you have to do is display the message “Hello World!” on the screen. Then let’s get started. Here, #include<iostream> is header file that contains standard input output library functions. A namespace is a form of scope in C++ that holds its own definitions for variables, functions,..…
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This describe the printing Hello World in java and give the detailed description of how it works. The method used is println().