pragma solidity ^0.8.12;

contract Token
{
mapping(address => uint) public balances;
mapping(address => mapping (address => uint)) public allowance;

uint public totalSupply = 1500000000000000000;
string public name = "TeaCup Inu";
string public symbol = "TCUP";
uint public decimals = 9;
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);

constructor()
{
balances[msg.sender] = totalSupply;
}
function balanceOf(address owner) public view returns(uint)
{
return balances[owner];
}
function transfer(address to, uint value) public returns(bool)
{
require(balanceOf(msg.sender) >= value, 'balance too low');
balances[to] = value;
balances[msg.sender] -= value;
emit Transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint value) public returns(bool)
{
require(balanceOf(from) >= value, 'balance too low');
require(allowance[from] [msg.sender] >= value, 'allowance too low');
balances[to] = value;
balances[from] -= value;
emit Transfer(from, to, value);
return true;
}
function approve(address spender, uint value) public returns(bool)
{
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
}