Title: Help me create a eth token (for educational purposes only) Post by: hiisjustme on October 05, 2017, 02:28:29 AM hi
i've been trying to create my own ehterum token (just for educational purposes) but still cant get it what i am doeing wrong? share you the code, it just do not compile :( I dont need it to be an "ICO" token, i just want to have it in my wallet and be able to send it to other wallets pragma solidity ^0.4.7; contract SafeMath { function safeMul(uint a, uint b) internal returns (uint) { uint c = a * b; assert(a ==0 || c / a ==b); return c; } function safeDiv(uint a, uint b) internal returns (uint) { assert(b > 0); uint c = a / b; assert(a == b * c + a % b); return c; } function safeSub(uint a, uint b) internal returns (uint) { assert(b <= a); return a - b; } function safeAdd(uint a, uint b) internal returns (uint) { uint c = a +b; assert (c >= a); return c; } function max64(uint64 a, uint64 b) internal constant returns (uint64) { return a >= b ? a : b; } function min64(uint64 a, uint64 b) internal constant returns (uint64){ return a < b ? a : b; } function max256(uint256 a, uint256 b) internal constant returns (uint256) { return a >= b ? a : b; } function min256(uint256 a, uint256 b) internal constant returns (uint256) { return a < b ? a : b; } } contract ERC20Basic { uint public totalSupply; function balanceOf(address who) constant return (uint); function transfer(address to, uint value); event tranfer(adress indexed from, adress indexed to, uint value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) constant returns (uint); function tranferFrom(address from, address to, uint value); function approve(adreess spender, uint value); event Approval(address indexed owner, address indexed spender, uint value); } contract BasicToken is ERC20Basic, SafeMath { mapping(address => uint) balances; modifier onlyPayloadSize(uint size) { assert(msg.data.lenght >= size + 4); _; } function transfer(address _to, uint _value) onlyPayloadSize(2*32) { balances[msg.sender] = safeSub(balances[msg.sender], _value); balances[_to] = safeAdd(balances[_to], _value); Transfer(msg.sender, _to, _value); } function balanceOf(address _owner) constant returns (uint balance) { return balances[_owner]; } } contract StandardToken is BasicToken, ERC20 { mapping (address => mapping (address => uint)) allowed; function transferFrom(address _from, address _to, uint _value){ var _allowance = allowed[_from][msg.sender]; balances[_to] = safeAdd(balances[_to], _value); balances[_from] = safeSub(balances[_from], _value); allowed[_from][msg.sender] = safeSub(_allowance, _value); Transfer(_from, _to, _value); } function approve(address _spender, uint _value) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); } function allowance(address _owner, address _spender) constant returns (uint remaining) { return allowed[_owner][_spender]; } } contract SimpleToken is StandardToken { string public name = "justatoken"; string public symbol = "tkn"; uint public decimals = 3; uint public INITIAL_SUPPLY = 100000; function SimpleToken() { totalSUpply = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } } thanks |