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contracts...BasicToken.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;


contract BasicToken {

  
  mapping(address => uint256) balances; 
  address owner;
  
  constructor() {
      owner = msg.sender;
  }
  
  function addBalance(address recipient, uint256 value) public {
    require(owner==msg.sender,"akses hanya owner");
    balances[recipient] += value;
  }
  
  function transfer(address recipient, uint256 value) public {
    require(balances[msg.sender]>=value,"balance tidak cukup");
       
    balances[msg.sender] -= value;

    balances[recipient] += value;
  }

 
  function balanceOf(address account) public view returns (uint256) {
      
    return balances[account];
  }

}