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This Is My Code

pragma solidity ^0.4.4;
contract Token {
/// @return total amount of tokens
 function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
 /// @return The balance
 function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
 /// @param _to The address of the recipient
 /// @param _value The amount of token to be transferred
 /// @return Whether the transfer was successful or not
 function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
 /// @param _from The address of the sender
 /// @param _to The address of the recipient
 /// @param _value The amount of token to be transferred
 /// @return Whether the transfer was successful or not
 function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
 /// @param _spender The address of the account able to transfer the tokens
 /// @param _value The amount of wei to be approved for transfer
 /// @return Whether the approval was successful or not
 function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
 /// @param _spender The address of the account able to transfer the tokens
 /// @return Amount of remaining tokens allowed to spent
 function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
 event Approval(address indexed _owner, address indexed _spender, uint256 _value);
 
}
contract StandardToken is Token {
function transfer(address _to, uint256 _value) returns (bool success) {
 //Default assumes totalSupply can’t be over max (2²⁵⁶ — 1).
 //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn’t wrap.
 //Replace the if with this one instead.
 //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
 if (balances[msg.sender] >= _value && _value > 0) {
 balances[msg.sender] -= _value;
 balances[_to] += _value;
 Transfer(msg.sender, _to, _value);
 return true;
 } else { return false; }
 }
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
 //same as above. Replace this line with the following if you want to protect against wrapping uints.
 //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
 if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
 balances[_to] += _value;
 balances[_from] -= _value;
 allowed[_from][msg.sender] -= _value;
 Transfer(_from, _to, _value);
 return true;
 } else { return false; }
 }
function balanceOf(address _owner) constant returns (uint256 balance) {
 return balances[_owner];
 }
function approve(address _spender, uint256 _value) returns (bool success) {
 allowed[msg.sender][_spender] = _value;
 Approval(msg.sender, _spender, _value);
 return true;
 }
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
 return allowed[_owner][_spender];
 }
mapping (address => uint256) balances;
 mapping (address => mapping (address => uint256)) allowed;
 uint256 public totalSupply;
}
//name this contract whatever you’d like
contract ERC20Token is StandardToken {
function () {
 //if ether is sent to this address, send it back.
 throw;
 }
/* Public variables of the token */
/*
 NOTE:
 The following variables are OPTIONAL vanities. One does not have to include them.
 They allow one to customise the token contract & in no way influences the core functionality.
 Some wallets/interfaces might not even bother to look at this information.
 */
 string public name; //fancy name: eg Simon Bucks
 uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It’s like comparing 1 wei to 1 ether.
 string public symbol; //An identifier: eg SBX
 string public version = ‘H1.0’;
//
// CHANGE THESE VALUES FOR YOUR TOKEN
//
//make sure this function name matches the contract name above. So if you’re token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token
function ERC20Token(
 ) {
 balances[msg.sender] = 0; // Give the creator all initial tokens (100000 for example)
 totalSupply = 100; // Update total supply (100000 for example)
 name = “MKCOIN”; // Set the name for display purposes
 decimals = 0; // Amount of decimals for display purposes
 symbol = “MKC”; // Set the symbol for display purposes
 }
/* Approves and then calls the receiving contract */
 function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
 allowed[msg.sender][_spender] = _value;
 Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn’t have to include a contract in here just for this.
 //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
 //it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
 if(!_spender.call(bytes4(bytes32(sha3(“receiveApproval(address,uint256,address,bytes)”))), msg.sender, _value, this, _extraData)) { throw; }
 return true;
 }
}

And I get the error

Token.sol:87:26: ParserError: Expected primary expression. string public version = ‘H1.0’;

Can Anyone Help Thanks In Advance

1 Answer 1

1

It seems that when you copied the code the double and normal quotes in your code got replaced with other special chars.

Make sure to replace and with ", and also replace and with '

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