Mastering Blockchain Programming with Solidity

Allow token burning using ERC20Burnable.sol

When you need to allow users to burn their tokens, you should use the ERC20Burnable.sol contract. This contract provides two functions: burn() and burnFrom().

The OpenZeppelin contract present at Chapter09/openzeppelin-solidity/contracts/token/ERC20/ERC20Burnable.sol is defined as follows:

import "./ERC20.sol";contract ERC20Burnable is ERC20 {    function burn(uint256 value) public {        _burn(msg.sender, value);    }    function burnFrom(address from, uint256 value) public {        _burnFrom(from, value);    }}

Let's review the preceding code in more detail. The contract contains the following functions:

• Inherits from:
• ERC20: Inherits the ERC20 token standard function.
• Functions:
• burn(): This burns the given number ...