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pragma solidity ^0.4.21;
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import "./ERC20Basic.sol";
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/**
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* @title ERC20 interface
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* @dev see https://github.com/ethereum/EIPs/issues/20
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*/
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contract ERC20 is ERC20Basic {
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function allowance(address owner, address spender) public view returns (uint256);
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function transferFrom(address from, address to, uint256 value) public returns (bool);
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function approve(address spender, uint256 value) public returns (bool);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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}
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