SportsplexToken

pragma solidity ^0.5.0;

import "./IERC20.sol";
import "./Math.sol";


contract ERC20 is IERC20 {
    using Math for uint256;

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

    function transfer(address to, uint256 amount) public returns (bool) {
        _transfer(msg.sender, to, amount);
        return true;
    }

    function transferFrom(address from, address to, uint256 amount) public returns (bool) {
        _transfer(from, to, amount);
        _approve(from, msg.sender, allowance[from][msg.sender].sub(amount));
        return true;
    }

    function approve(address spender, uint256 amount) public returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedAmount) public returns (bool) {
        _approve(msg.sender, spender, allowance[msg.sender][spender].add(addedAmount));
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedAmount) public returns (bool) {
        _approve(msg.sender, spender, allowance[msg.sender][spender].sub(subtractedAmount));
        return true;
    }

    function _transfer(address from, address to, uint256 amount) internal {
        require(to != address(0), "transfer to the zero address");

        balanceOf[from] = balanceOf[from].sub(amount);
        balanceOf[to] = balanceOf[to].add(amount);
        emit Transfer(from, to, amount);
    }

    function _approve(address owner, address spender, uint256 amount) internal {
        require(spender != address(0), "approve to the zero address");

        allowance[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "mint to the zero address");

        totalSupply = totalSupply.add(amount);
        balanceOf[account] = balanceOf[account].add(amount);
        emit Transfer(address(0), account, amount);
    }
}

pragma solidity ^0.5.0;


interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 amount);
    event Approval(address indexed from, address indexed to, uint256 amount);

    function transfer(address to, uint256 amount) external returns (bool);
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
    function approve(address spender, uint256 amount) external returns (bool);
}

pragma solidity ^0.5.0;


library Math {
     function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(a >= b, "subtraction underflow");
        return a - b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "division by zero");
        return a / b;
    }
}

pragma solidity ^0.5.0;

import "./ERC20.sol";


contract Token is ERC20 {
    string public constant name = "SportsplexToken";
    string public constant symbol = "SPX";
    uint8  public constant decimals = 8;

    constructor() public {
        uint256 supply = (10 ** 9);
        _mint(msg.sender, supply.mul(10 ** uint256(decimals)));
    }
}

{
  "compilationTarget": {
    "Token.sol": "Token"
  },
  "evmVersion": "petersburg",
  "libraries": {},
  "optimizer": {
    "enabled": true,
    "runs": 10000000
  },
  "remappings": []
}