27 lines
784 B
Solidity
27 lines
784 B
Solidity
pragma solidity ^0.5.17;
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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 {
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function totalSupply() public view returns (uint256);
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function balanceOf(address _who) public view returns (uint256);
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function allowance(address _owner, address _spender)
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public view returns (uint256);
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function transfer(address _to, uint256 _value) public returns (bool);
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function approve(address _spender, uint256 _value)
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public returns (bool);
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function transferFrom(address _from, address _to, uint256 _value)
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public returns (bool);
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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}
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