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;
    address public priceProvider;

    /**
     * Network: Sepolia
     * Aggregator: ETH/USD
     * Address: 0x1b44F3514812d835EB1BDB0acB33d3fA3351Ee43
     */
    constructor(address _priceProvider) {
        priceProvider = _priceProvider;
        priceFeed = AggregatorV3Interface(
            _priceProvider
        );
    }

    function setPriceProvider(address _priceProvider) public {
        priceProvider = _priceProvider;
        priceFeed = AggregatorV3Interface(
            _priceProvider
        );
    }

    /**
     * Returns the latest price.
     */
    function getLatestPrice() public view returns (int) {
        // prettier-ignore
        (
            /* uint80 roundID */,
            int price,
            /*uint startedAt*/,
            /*uint timeStamp*/,
            /*uint80 answeredInRound*/
        ) = priceFeed.latestRoundData();
        return price;
    }
}