File size: 3,660 Bytes
2707524 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | pragma solidity ^0.4.18;
contract owned {
address public owner;
address public candidate;
function owned() payable internal {
owner = msg.sender;
}
modifier onlyOwner {
require(owner == msg.sender);
_;
}
function changeOwner(address _owner) onlyOwner public {
candidate = _owner;
}
function confirmOwner() public {
require(candidate != address(0));
require(candidate == msg.sender);
owner = candidate;
delete candidate;
}
}
library SafeMath {
function sub(uint256 a, uint256 b) pure internal returns (uint256) {
assert(a >= b);
return a - b;
}
function add(uint256 a, uint256 b) pure internal returns (uint256) {
uint256 c = a + b;
assert(c >= a && c >= b);
return c;
}
}
contract ERC20 {
uint256 public totalSupply;
function balanceOf(address who) public constant returns (uint256 value);
function allowance(address owner, address spender) public constant returns (uint256 _allowance);
function transfer(address to, uint256 value) public returns (bool success);
function transferFrom(address from, address to, uint256 value) public returns (bool success);
function approve(address spender, uint256 value) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract Ooredoo is ERC20, owned {
using SafeMath for uint256;
string public name = "Ooredoo";
string public symbol = "ORE";
uint8 public decimals = 18;
uint256 public totalSupply;
mapping (address => uint256) private balances;
mapping (address => mapping (address => uint256)) private allowed;
function balanceOf(address _who) public constant returns (uint256) {
return balances[_who];
}
function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
function Ooredoo() public {
totalSupply = 1000000000 * 1 ether;
balances[msg.sender] = totalSupply;
Transfer(0, msg.sender, totalSupply);
}
function transfer(address _to, uint256 _value) public returns (bool success) {
require(_to != address(0));
require(balances[msg.sender] >= _value);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_to != address(0));
require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool success) {
require(_spender != address(0));
require(balances[msg.sender] >= _value);
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function withdrawTokens(uint256 _value) public onlyOwner {
require(balances[this] >= _value);
balances[this] = balances[this].sub(_value);
balances[msg.sender] = balances[msg.sender].add(_value);
Transfer(this, msg.sender, _value);
}
} |