بلاکچین 79626

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شرح پروژه

سلام  اجرای قرارداد هوشمند ( smart contract) بر بلاکچین ترون رو انجام میدید؟  

pragma solidity ^0.4.18;

import './SafeMath.sol';

/

 * @title ERC20Basic

 * @dev Simpler version of ERC20 interface

 * @dev see https://github.com/ethereum/EIPs/issues/179

 */

contract ERC20Basic {

  function totalSupply() public constant returns (uint);

  function balanceOf(address who) public view returns (uint256);

  function transfer(address to, uint256 value) public returns (bool);

  event Transfer(address indexed from, address indexed to, uint256 value);

}

/

 * @title Basic token

 * @dev Basic version of StandardToken, with no allowances.

 */

contract BasicToken is ERC20Basic {

  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /

  * @dev transfer token for a specified address

  * @param _to The address to transfer to.

  * @param _value The amount to be transferred.

  */

  function transfer(address _to, uint256 _value) public returns (bool) {

    require(_to != address(0));

    require(_value <= balances[msg.sender]);

    // SafeMath.sub will throw if there is not enough balance.

    balances[msg.sender] = balances[msg.sender].sub(_value);

    balances[_to] = balances[_to].add(_value);

    Transfer(msg.sender, _to, _value);

    return true;

  }

  /

  * @dev Gets the balance of the specified address.

  * @param _owner The address to query the the balance of.

  * @return An uint256 representing the amount owned by the passed address.

  */

  function balanceOf(address _owner) public view returns (uint256 balance) {

    return balances[_owner];

  }

}

 Contract is :

 TR7NHqjeKQxGTCiv8q8ZY4pL8otSzgjLj6t  یعنی جابجایی و ارسال توکن برای برآورد gas fee  این اسکریپت در mainnet ثبت میشه 

0322

مهارت ها و تخصص های مورد نیاز

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