Pjak Dollar

pragma solidity ^0.5.16;

contract PjakDollar{

    string public name = "Pjak Dollar";
    string public symbol = "PJAK";
    string public standard = "Pjak Dollar v1";
    uint8 public decimals = 8;
    uint256 public totalSupply;

    event Transfer(
        address indexed _from,
        address indexed _to,
        uint256 _value
    );

    event Approval(
        address indexed _owner,
        address indexed _spender,
        uint256 _value
    );

    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;


    constructor(uint256 _initialSupply) public {
        balanceOf[msg.sender] = _initialSupply;  
        totalSupply = _initialSupply;
    }

    function transfer(address _to, uint256 _value) public returns (bool success){
        require(balanceOf[msg.sender] >= _value);
        balanceOf[msg.sender] -= _value;
        balanceOf[_to] += _value;

        emit Transfer(msg.sender, _to, _value);
        return true;
    }

    function approve(address _spender, uint256 _value) public returns (bool success) {

        allowance[msg.sender][_spender] = _value;

        emit Approval(msg.sender, _spender, _value);

        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) public returns(bool success){
        require(_value <= balanceOf[_from]);
        require(_value <= allowance[_from][msg.sender]);

        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;

        allowance[_from][msg.sender] -= _value;

        emit Transfer(_from, _to, _value);
        return true;
    
    }


    
}

{
  "compilationTarget": {
    "PjakDollar.sol": "PjakDollar"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}