Code for solidity, a programming language to deploy smart contract to ethereum platform. This demonstrate how to create, and transfer balance from one account to other account. Online IDE can be found here: http://remix.ethereum.org/

dragonstone.sol

pragma solidity ^0.4.0;

/*
Currency that can only be issued by its creator and transferred to anyone
*/
contract DragonStone {
    address public creator;
    mapping (address => uint) public balances;
    
    // event that notifies when a transfer has completed
    event Delivered(address from, address to, uint amount);
    
    function DragonStone() {
        creator = msg.sender;
    }
    
    function create(address receiver, uint amount) {
        if (msg.sender != creator) throw;
        balances[receiver] += amount;
    }
    
    function transfer(address receiver, uint amount) {
        if (balances[msg.sender] < amount) throw;
        balances[msg.sender] -= amount;
        balances[receiver] += amount;
        Delivered(msg.sender, receiver, amount);
    }
}