// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.6.0 <0.8.0;
//Safe Math Interface
 
contract SafeMath {
 
    function safeAdd(uint256 a, uint256 b) public pure returns (uint256 c) {
        c = a + b;
        require(c >= a);
    }
 
    function safeSub(uint256 a, uint256 b) public pure returns (uint256 c) {
        require(b <= a);
        c = a - b;
    }
 
    function safeMul(uint256 a, uint256 b) public pure returns (uint256 c) {
        c = a * b;
        require(a == 0 || c / a == b);
    }
 
    function safeDiv(uint256 a, uint256 b) public pure returns (uint256 c) {
        require(b > 0);
        c = a / b;
    }
}
 
 
//ERC Token Standard #20 Interface
 
interface ERC20Interface {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);
     /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
     /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
 
    event Transfer(address indexed from, address indexed to, uint256 tokens);
    event Approval(address indexed tokenOwner, address indexed spender, uint256 tokens);
}
 

 
//Actual token contract
 
contract FlokiMuskToken is ERC20Interface, SafeMath {
    string public symbol;
    string public  name;
    uint8 public decimals;
    uint256 public _totalSupply;
 
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    
 
    constructor (address developerWalletAddress) public {
        symbol = "FLOKI";
        name = "Floki Musk";
        decimals = 18;
        _totalSupply = 1000000000000* 10**18;
        _balances[developerWalletAddress] = _totalSupply;
        emit Transfer(address(0), developerWalletAddress, _totalSupply);
    }
 
    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }
 
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }
 
    function transfer(address to, uint256 tokens) public override returns (bool success) {
        _balances[msg.sender] = safeSub(_balances[msg.sender], tokens);
        _balances[to] = safeAdd(_balances[to], tokens);
        emit Transfer(msg.sender, to, tokens);
        return true;
    }
 
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }
 
    function transferFrom(address from, address to, uint256 tokens) public override returns (bool success) {
        _balances[from] = safeSub(_balances[from], tokens);
        _allowances[from][msg.sender] = safeSub(_allowances[from][msg.sender], tokens);
        _balances[to] = safeAdd(_balances[to], tokens);
        emit Transfer(from, to, tokens);
        return true;
    }
 
    function allowance(address tokenOwner, address spender) public view virtual override returns (uint256) {
        return _allowances[tokenOwner][spender];
    }
 
}