What is programming?

What is programming in the first place?

Data that summarizes the procedure of processing executed by a computer is called a program.

What is a programming language? Computers can't understand the words we usually speak. A computer-friendly language is called a programming language. Texts and files written in programming languages ​​are called source code

Types of programming languages

Ruby java php Python

and so on.

To run the program, type a command into the terminal.

From here, I will describe the programming language Ruby.

irb The irb command is a function that allows you to run Ruby programs directly from the terminal (short for Interactive Ruby). You can run it directly in the terminal instead of writing code in an editor and running the terminal.

Terminal screen

#Start irb
% irb
irb(main):001:0> "Welcome! Ruby" #Type in like this
=>"Welcome! Ruby" #Output like this

That's all for today.

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