Solidity is a programming language that is very close to JavaScript. Similarities between JavaScript and C can be found within Solidity. Solidity is a statically-typed, case-sensitive, and object-oriented programming (OOP) language. Although it is object-oriented, it supports limited objected orientation features. What this means is that variable data types should be defined and known at compile time. Functions and variables should be written in OOP same way as they are defined. In Solidity, Cat is different from CAT, cat, or any other variation of cat. The statement terminator in Solidity is the semicolon: ;.
Solidity code is written in Solidity files that have the extension .sol. They are human-readable text files that can be opened as text files in any editor including Notepad.
A Solidity file is composed of the following four high-level...
