Remix
.Remix is a web browser
based IDE that allows you to write Solidity smart contracts, then deploy and run the smart contracts.
We can use remix on the following URL :
https://remix.ethereum.org/
pragma solidity ^0.4.0;
contract helloWorld {
string hw;
function set(string x) public {
hw = x;
}
function get() public constant returns (string) {
return hw;
}
}