شما می توانید با قراردادهای دیگر با اعلام یک تعامل داشته باشید رابط
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رابط
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
contract Counter {
uint256 public count;
function increment() external {
count += 1;
}
}
interface ICounter {
function count() external view returns (uint256);
function increment() external;
}
contract MyContract {
function incrementCounter(address _counter) external {
ICounter(_counter).increment();
}
function getCount(address _counter) external view returns (uint256) {
return ICounter(_counter).count();
}
}
// Uniswap example
interface UniswapV2Factory {
function getPair(address tokenA, address tokenB)
external
view
returns (address pair);
}
interface UniswapV2Pair {
function getReserves()
external
view
returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
}
contract UniswapExample {
address private factory = 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f;
address private dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
address private weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
function getTokenReserves() external view returns (uint256, uint256) {
address pair = UniswapV2Factory(factory).getPair(dai, weth);
(uint256 reserve0, uint256 reserve1,) =
UniswapV2Pair(pair).getReserves();
return (reserve0, reserve1);
}
}