while condition doĭo-while is also used to iterate a set of statements based on a condition.

Usually while is preferred when number of iterations are not known in advance. While is also used to iterate a set of statements based on a condition. įor loop is used to iterate a set of statements based on a condition.

If if(conditional-expression)Įnd Nested-If-else if(condition-expression1)Ĭase is similar to Switch statement, where it is used to execute one set of a statement from multiple conditions. If, If-else, Nested-Ifs are used when you want to perform a certain set of operations based on conditional expressions. Scope is global and hence they can be accessible anywhere in the program.

They can be accessed from any instance of the class within a method. Instance variables belongs to a instance of the class. Variable name must start with They must be initialized before use. Variable name must start with either _ or lowercase letter.Ĭlass variables belongs to whole class and can be accessible anywhere inside the class. Scope is limited to the block of the variable initialization. When you assign a value to a variable, declaration happens automatically and a prefix is needed to indicate the following variable types. In Ruby, there is no need to explicitly declare variables to reserve memory space. Expressive features and visual appearance.Concise and simple to read and powerful too.More commonly used in Rails applications.Ruby is a general purpose object oriented programming language developed by Yukihiro Matsumoto. Following is a sample Ruby program which takes name as input and prints hello message with your name. OneCompiler's Ruby online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. The editor shows sample boilerplate code when you choose language as Ruby and start coding. Getting started with the OneCompiler's Ruby compiler is simple and pretty fast. It's one of the robust, feature-rich online compilers for Ruby language, running on the latest version 2.3.1. Write, Run & Share Ruby code online using OneCompiler's Ruby online compiler for free.

Download ruby online compiler