What is solidity programming language ?

 Solidity is a contract-oriented, high-level programming language for implementing smart contracts. Solidity is highly influenced by C++, Python and JavaScript and has been designed to target the Ethereum Virtual Machine (EVM).

Solidity is statically typed, supports inheritance, libraries and complex user-defined types programming language.

You can use Solidity to create contracts for uses such as voting, crowdfunding, blind auctions, and multi-signature wallets.

When deploying contracts, you should use the latest released version of Solidity. Apart from exceptional cases, only the latest version receives security fixes. Furthermore, breaking changes as well as new features are introduced regularly. We currently use a 0.y.z version number to indicate this fast pace of change.

A Simple Smart Contract example 

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.4.16 <0.9.0;

contract SimpleStorage {

    uint storedData;

    function set(uint x) public {

        storedData = x;

    }

    function get() public view returns (uint) {

        return storedData;

    }

}