Write Your First Smart Contract

First step of being a blockchain developer
​Remix is a powerful, open source tool that helps you write Solidity contracts straight from the browser. Remix also supports testing, debugging and deploying of smart contracts and much more.
It is recommended to use Remix to create and deploy smart contracts quickly.
In Remix, create a new file with name Quote.sol by clicking ➕
 icon in browser section under FILE EXPLORERS section and start writing the code as mentioned below.
Mention Compiler Version
pragma solidity >=0.5.0<0.6.0;
Make sure the solidity version declared in the contract matches your compiler version
Declare Contract Statement
contract Quote { }
Add Public Variables
quote is used to store the current quote in our smart contract 
 owner is used to store the owner of the current quote
string public quote;
address public owner;
Setter Function
Updates the current quote and the current owner of the quote. Here msg.sender is used to extract the user address who signed the transaction.
function setQuote(string memory newQuote) public {
        quote = newQuote;
        owner = msg.sender;
  }
Getter Function
Returns the current quote and the current owner of the quote.
function getQuote() view public returns(string memory currentQuote, address currentOwner) {
       currentQuote = quote;
       currentOwner = owner;
    }
Complete Code Snippet
Quote.sol
pragma solidity >=0.5.0 <0.6.0;
​
contract Quote{
​
    string public quote;
    address public owner;
​
    function setQuote(string memory newQuote) public {
        quote = newQuote;
        owner = msg.sender;
    }
    
    function getQuote() view public returns(string memory currentQuote, address currentOwner) {
        currentQuote = quote;
        currentOwner = owner;
    }
}
This tutorial is deployed on Kovan TestNet at address 0xa67767B5ed6Fa6Fc19baBD4F18ffe72EAbC85FdA
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Last modified 2yr ago