32 lines
823 B
Solidity
32 lines
823 B
Solidity
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// SPDX-License-Identifier: MIT
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pragma solidity >=0.4.2;
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contract SimpleCoin {
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mapping(address => uint256) balances;
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event Transfer(address indexed _from, address indexed _to, uint256 _value);
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constructor() {
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balances[tx.origin] = 10000;
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}
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function sendCoin(address receiver, uint256 amount)
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public
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returns (bool sufficient)
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{
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if (balances[msg.sender] < amount) return false;
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balances[msg.sender] -= amount;
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balances[receiver] += amount;
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emit Transfer(msg.sender, receiver, amount);
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return true;
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}
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function getBalanceInEth(address addr) public view returns (uint256) {
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return getBalance(addr) * 2;
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}
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function getBalance(address addr) public view returns (uint256) {
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return balances[addr];
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}
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}
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