Mastering Blockchain Programming with Solidity

Create crowdsale using Crowdsale.sol

Crowdsale.sol is just the basic version of the crowdsale contract. Using this, we can receive ether and mint new tokens for the ether sender. This contract supports the following features:

• Allows the deployer of the contract to set the token rate, wallet address to receive ether, and the pre-minted token contract address.
• Receives ether and send tokens to the sender.
• Provides pre- and post-validation functions for the contracts that inherit from this. The inherited contract can override the definition of these functions in order to pre- and post-validate a crowdsale transaction.

The OpenZeppelin contract is present at Chapter09/openzeppelin-solidity/contracts/crowdsale/Crowdsale.sol. Here, we have shortened ...