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File 1 of 1 : danCoin

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

contract danCoin {
    string public name;
    string public symbol;
    uint256 public decimals;
    uint256 public total_supply;
    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);
    constructor(string memory _name, string memory _symbol, uint256 _decimals, uint256 _total_supply) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;
        total_supply = _total_supply;
        balanceOf[msg.sender] = total_supply;
     function transfer(address _to, uint256 _value) external returns(bool success) {
        require (balanceOf[msg.sender] >= _value);
        _transfer ( msg.sender, _to, _value);
        return true;
    function _transfer (address _from, address _to, uint256 _value) internal {
        require ( _to != address(0));
        balanceOf[_from] = balanceOf[_from] - (_value);
        balanceOf[_to] = balanceOf[_to] + (_value);
        emit Transfer(_from, _to, _value);
    function transferFrom(address _from, address _to, uint256 _value) external returns(bool) {
        require (_value <= balanceOf[_from]);
        require (_value <= allowance[_from][msg.sender]);
        allowance[_from][msg.sender] = allowance[_from][msg.sender] - (_value);
        _transfer(_from, _to, _value);
        return true;
    function approve(address _spender, uint256 _value) external returns(bool) {
        require (_spender != address(0));
        allowance[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;

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