Doing lesson 5 from here how to write smart-contract, lesson 5 I got compile error in remix. It goes:
browser/ballot.sol:40:2: ParserError: Expected pragma, import directive or contract/interface/library definition. function approve(address _spender, uint _value) public constant returns (bool success){
and the full code is:
pragma solidity ^0.4.18;
contract SimpleTokenCoin{
string public constant name = "Simple Coin Token";
string public constant symbol = "SCT";
uint32 public constant decimals = 18;
uint public totalSupply = 0;
mapping (address => uint) balances;
function balanceOf(address _owner) public constant returns (uint balance){ return balances[_owner]; }
function transfer(address _to, uint _value) public returns (bool success){ if(balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]){ balances[msg.sender] -=_value; balances[_to] += value; Transfer(msg.sender, _to, _value); return true; } return false; }
function transferFrom(address _from, address _to, uint _value) public returns (bool success){ if(balances[_from] >= _value && balances[_to] + _value >= balances[_to]){
balances[_from] -=_value; balances[_to] += value; Transfer(_from, _to, _value); return true; } return false; } }
function approve(address _spender, uint256 _value) public constant returns (bool success){ return false; }
function allowance(address _owner, address _spender) public constant retuns (uint256 remaining){ return 0; }
function mint(address _to, uint _value) public { assert(totalSupply + _value >= totalSupply && balances[_to] +_value >= balances[_to]); balances[_to] += _value; totalSupply += _value;
}
event Transfer(address indexed _from, address indexed _to, uint value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}