Mobile Radio

pragma solidity ^0.5.10;

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address _owner) external view returns (uint256);
    function transfer(address _to, uint256 _value) external returns (bool);
    function transferFrom(address _from, address _to, uint256 _value) external returns (bool);
    function approve(address _spender, uint256 _value) external returns (bool);
    function allowance(address _owner, address _spender) external view returns (uint256);

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

library SafeMath {
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        assert(c / a == b);
        return c;
    }
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a / b;
        return c;
    }
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        assert(b <= a);
        return a - b;
    }
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }
}

contract Ownable {
    address public owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    event OwnershipRenounced(address indexed previousOwner);

    constructor() public {
        owner = msg.sender;
    }

    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    function transferOwnerShip(address newOwner) public onlyOwner {
        require(newOwner != address(0));
        emit OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }

    function renounceOwnerShip() public onlyOwner {
        emit OwnershipRenounced(owner);
        owner = address(0);
    }
}

interface tokenRecipient {
    function receiveApproval(address _from, uint256 _value, address _token, bytes calldata _extraData) external;
}

contract TokenERC20 is Ownable {
    using SafeMath for uint256;
    string public name;
    string public symbol;
    uint8 public decimals = 18;
    uint256 public totalSupply;

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

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
    event Burn(address indexed _from, uint256 _value);

    constructor (uint256 _initialSupply, string memory _tokenName, string memory _tokenSymbol, address _tokenOwner) public {
        totalSupply = _initialSupply * 10 ** uint256(decimals);
        balanceOf[_tokenOwner] = totalSupply;
        name = _tokenName;
        symbol = _tokenSymbol;

        emit Transfer(address(0), _tokenOwner, totalSupply);
    }

    function _transfer(address _from, address _to, uint256 _value) internal {
        require(_to != address(0));
        require(balanceOf[_from] >= _value);
        require(balanceOf[_to] + _value > balanceOf[_to]);
        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;
        emit Transfer(_from, _to, _value);
    }

    function transfer(address _to, uint256 _value) public {
        _transfer(msg.sender, _to, _value);
    }

    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
        require(_value <= allowance[_from][msg.sender]);   // Check allowance
        allowance[_from][msg.sender] -= _value;
        _transfer(_from, _to, _value);
        return true;
    }

    function approve(address _spender, uint256 _value) public returns (bool) {
        allowance[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    function approveAndCall(address _spender, uint256 _value, bytes memory _extraData) public returns (bool) {
        tokenRecipient spender = tokenRecipient(_spender);
        if (approve(_spender, _value)) {
            spender.receiveApproval(msg.sender, _value, address(this), _extraData);
            return true;
        }
    }

    function burn(uint256 _value) public returns (bool) {
        require(balanceOf[msg.sender] >= _value);   // Check if the sender has enough
        balanceOf[msg.sender] -= _value;
        totalSupply -= _value;
        emit Burn(msg.sender, _value);
        return true;
    }

    function burnFrom(address _from, uint256 _value) public returns (bool) {
        require(balanceOf[_from] >= _value);
        require(_value <= allowance[_from][msg.sender]);   // Check allowance
        balanceOf[_from] -= _value;
        allowance[_from][msg.sender] -= _value;   // Subtract from the sender's allowance
        totalSupply -= _value;
        emit Burn(_from, _value);
        return true;
    }

    function transferArray(address[] memory _to, uint256[] memory _value) public returns (bool) {
        require(_to.length > 0);
        for (uint256 i = 0; i < _to.length; i++) {
            _transfer(msg.sender, _to[i], _value[i]);
        }
    }

    function transferBatch(address[] memory _to, uint256 _value) public returns (bool) {
        require(_to.length > 0);
        for (uint256 i = 0; i < _to.length; i++) {
            _transfer(msg.sender, _to[i], _value);
        }
    }
}

{
  "compilationTarget": {
    "TokenERC20.sol": "TokenERC20"
  },
  "evmVersion": "petersburg",
  "libraries": {},
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}