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Contract Source Code:
File 1 of 1 : Gecko
/* Namco Limited[a] was a Japanese multinational video game and entertainment company. */ //SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.0; interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); 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 Gecko is IERC20 { using SafeMath for uint256; string public constant name = "CoinGecko Token"; string public constant symbol = "GECKO"; uint8 public constant decimals = 18; mapping(address => uint256) balances; mapping(address => mapping (address => uint256)) allowed; uint256 private totalSupply_ = 10000000*10**uint256(decimals); constructor() public { balances[msg.sender] = totalSupply_; } function totalSupply() public override view returns (uint256) { return totalSupply_; } function balanceOf(address tokenOwner) public override view returns (uint256) { return balances[tokenOwner]; } function transfer(address receiver, uint256 numTokens) public override returns (bool) { require(numTokens <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(numTokens); balances[receiver] = balances[receiver].add(numTokens); emit Transfer(msg.sender, receiver, numTokens); return true; } function approve(address delegate, uint256 numTokens) public override returns (bool) { allowed[msg.sender][delegate] = numTokens; emit Approval(msg.sender, delegate, numTokens); return true; } function allowance(address owner, address delegate) public override view returns (uint) { return allowed[owner][delegate]; } function transferFrom(address owner, address buyer, uint256 numTokens) public override returns (bool) { require(numTokens <= balances[owner]); require(numTokens <= allowed[owner][msg.sender]); balances[owner] = balances[owner].sub(numTokens); allowed[owner][msg.sender] = allowed[owner][msg.sender].sub(numTokens); balances[buyer] = balances[buyer].add(numTokens); emit Transfer(owner, buyer, numTokens); return true; } } library SafeMath { function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } }
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