Transferring tokens between accounts

Tokens can be transferred between multiple accounts. This allows you to trade tokens in exchange for services. To achieve this functionality, ERC20 provides a standard function definition. You will learn to implement basic transfer function with this recipe.

Getting ready

You need to have a development environment that supports solidity programming and an Ethereum network to deploy and test your code. 

How to do it...

1. ERC20 defines a transfer function to transfer tokens between accounts. Create the function to implement the feature:

function transfer() { }

2. Modify the function to accept two parameters: to address the amount to transfer. It should return a result of type boolean to indicate success or failure:

function transfer(address_to, uint256_value)
    publicreturns (bool) { }

3. Use the msg.senderproperty to determine the from address. You don't have to explicitly pass the from address. The function considers the address of the transaction sender as the from...