Getting Started - First Style
Hello World
The next program prints the Hello World message on the screen (std-out).
see "Hello World" Run the program
to run the program, save the code in a file, for example : hello.ring then from the command line or terminal, run it using Ring
ring hello.ring Create Executable File
Using Ring2EXE we can create executable file for our application
ring2exe hello.ring -static Not Case-Sensitive
Since the Ring language is not case-sensitive, the same program can be written in different styles
Tip
It’s better to select one style and use it in all of the program source code
SEE "Hello World" See "Hello World" Multi-Line literals
Using Ring we can write multi-line literal, see the next example
See " Hello Welcome to the Ring programming language How are you? " Also you can use the nl variable to insert new line and you can use the + operator to concatenate strings
As we have NL for new lines, we have Tab and CR (Carriage return) too!
Note
nl value means a new line and the actual codes that represent a newline is different between operating systems
See "Hello" + nl + "Welcome to the Ring programming language" + nl + "How are you?" Getting Input
You can get the input from the user using the give command
See "What is your name? " Give cName See "Hello " + cName No Explicit End For Statements
You don’t need to use ‘;’ or press ENTER to separate statements. The previous program can be written in one line.
See "What is your name? " give cName see "Hello " + cName Using ? to print expression then new line
It’s common to print new line after printing an expression, We can use the ? operator to do that!
Example:
? "Hello, World!" for x = 1 to 10 ? x next Output:
Hello, World! 1 2 3 4 5 6 7 8 9 10 Writing Comments
We can write one line comments and multi-line comments
The comment starts with # or //
Multi-lines comments are written between /* and */
/* Program Name : My first program using Ring Date : 2016.09.09 Author : Mahmoud Fayed */ See "What is your name? " # print message on screen give cName # get input from the user see "Hello " + cName # say hello! // See "Bye!" Note
Using // to comment a lines of code is just a code style.