balance_chk

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./cust_error.sol";

contract Account{
    address public bank;
    address public owner;

    constructor(address _owner)payable{
        bank = msg.sender;
        owner = _owner;
    }
    function getbal() public view returns(uint){
        // return address(this).balance;

    }
    event Received(address, uint);
    receive() external payable {
        emit Received(msg.sender, msg.value);
    }
}
contract accountfactory{
    Account[] public accounts;
    // uint public vall;
    // constructor(address cc){
    //     vall = cc.value;
    // }
    function createacc(address _owner)external payable{
        require(msg.value >= 21);
        Account account = new Account{value: 21}(_owner);
        accounts.push(account);
    }
    function getbal() public view returns(uint){
        return address(this).balance;
    }
    function invest() public payable {
    }
    address public addofaa;
    function getaddbb(address aaa) public {
        addofaa = aaa;
    }
    function call_other()public view returns(string memory)
    {
        aa a = aa(addofaa);
        return a.say_hello();
    }
}