pragma solidity 0.5.16; interface IBEP20 { function totalSupply() external view returns (uint256); function decimals() external view returns (uint8); function symbol() external view returns (string memory); function name() external view returns (string memory); function getOwner() external view returns (address); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address _owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } function _msgSender() internal view returns (address payable) { return msg.sender; } function _msgData() internal view returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract Name is Context, IBEP20, Ownable { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; uint8 private _decimals; string private _symbol; string private _name; address charityWallet = 0x636323D0CEbddBfd2d3079642DF33Fb8B2cF4C02; //charity address uint256 public charityFee = 6; uint256 public burnFee = 4; event FeesChanged(uint256 newBurnFee, uint256 newCharityFee); event CharityWalletChanged(address account); constructor() public { _name = "Name Test"; _symbol = "NAS"; _decimals = 18; _totalSupply = 75000000*10**uint(_decimals); _balances[msg.sender] = _totalSupply; emit Transfer(address(0), msg.sender, _totalSupply); } function getOwner() external view returns (address) { return owner(); } function decimals() external view returns (uint8) { return _decimals; } function symbol() external view returns (string memory) { return _symbol; } function name() external view returns (string memory) { return _name; } function totalSupply() external view returns (uint256) { return _totalSupply; } function balanceOf(address account) external view returns (uint256) { return _balances[account]; } function transfer(address recipient, uint256 amount) external returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) external view returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) external returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) external returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "BEP20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "BEP20: decreased allowance below zero")); return true; } function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "BEP20: transfer from the zero address"); require(recipient != address(0), "BEP20: transfer to the zero address"); uint256 burnAmt = amount.mul(burnFee).div(100); uint256 charityAmt = amount.mul(charityFee).div(100); uint256 tokensToTransfer = amount.sub(burnAmt).sub(charityAmt); _balances[address(0)] = _balances[address(0)].add(burnAmt); _balances[charityWallet] = _balances[charityWallet].add(charityAmt); _balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(tokensToTransfer); _totalSupply = _totalSupply.sub(burnAmt); emit Transfer(sender, recipient, amount); emit Transfer(msg.sender, address(0), burnAmt); emit Transfer(msg.sender, charityWallet, charityAmt); } function _burn(address account, uint256 amount) internal { require(account != address(0), "BEP20: burn from the zero address"); _balances[account] = _balances[account].sub(amount, "BEP20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } function setFees(uint256 _burnFee, uint256 _charityFee) public onlyOwner{ burnFee = _burnFee; charityFee = _charityFee; emit FeesChanged(_burnFee, _charityFee); } function setCharityWallet(address account) public onlyOwner{ charityWallet = account; emit CharityWalletChanged(account); } function _approve(address owner, address spender, uint256 amount) internal { require(owner != address(0), "BEP20: approve from the zero address"); require(spender != address(0), "BEP20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "BEP20: burn amount exceeds allowance")); } }
0.5.16