PlayUniswapV2.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

// contract C {
//    uint private data;
//    uint public info;

//    constructor() {
//        info = 10;
//    }

//    function increment(uint a) private pure returns (uint result) {
//        result = a + 1;
//    }

//    function dupdateData(uint a) public {
//        data = a;
//    }

//    function getData() public view returns (uint) {
//        return data;
//    }

//    function compute(uint a, uint b) internal pure returns (uint) {
//        return a + b;
//    }
// }

// contract D{
//    C c = new C();
   
//    function readInfo() public view returns (uint) {
//        return c.info();
//    }

// }

// contract E is C {
//    uint private result;
//    C private c;
   
//    constructor() {
//        c = new C();
//    }

//     function getComputedResult() public pure returns (uint) {
//         return compute(23, 5);
//     }

//     function getResult() public view returns (uint) {
//         return result;
//     }

//     function getInfo() public view returns (uint) {
//         return c.info();
//     }
// }

// 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f
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 Play {
    address UniswapV2FactoryAddress = 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f;
    // address BNBAddress = 0xB8c77482e45F1F44dE1745F52C74426C631bDD52;
    address UNIAddress = 0x1f9840a85d5af5bf1d1762f925bdaddc4201f984;
    address USDCAddress = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    address PairAddress; // 0xEBFb684dD2b01E698ca6c14F10e4f289934a54D6

    function getPairAddress() internal {
        PairAddress = UniswapV2Factory(UniswapV2FactoryAddress).getPair(USDCAddress,UNIAddress);
    }

    function findReserve() public view returns (uint112 reserve0, uint112 reserve1) {
        (uint112 UNIAddress, uint112 USDCReserve,) = UniswapV2Pair(PairAddress).getReserves();
        reserve0 = UNIAddress;
        reserve1 = USDCReserve;
    }
}