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docs.chain.link...samples...PriceFeeds...PriceConsumerV3.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

contract PriceConsumerV3 {
    AggregatorV3Interface internal priceFeed;

    /**
     * Network: Goerli
     * Aggregator: ETH/USD
     * Address: 0xD4a33860578De61DBAbDc8BFdb98FD742fA7028e
     */
    constructor() {
        priceFeed = AggregatorV3Interface(
            0xD4a33860578De61DBAbDc8BFdb98FD742fA7028e
        );
    }

    /**
     * Returns the latest price
     */
    function getLatestPrice() public view returns (int) {
        (
            ,
            /*uint80 roundID*/ int price /*uint startedAt*/ /*uint timeStamp*/ /*uint80 answeredInRound*/,
            ,
            ,

        ) = priceFeed.latestRoundData();
        return price;
    }
}