Full example of Struct in Solidity

StructExampleFull.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

contract StructDemo {
    struct User {
        uint256 level;
        uint256 status;
    }
    mapping(address => User) public userList;
    address[] public userAddresses;

    constructor() {
        User memory userDetail = User(1, 1);
        userList[msg.sender] = userDetail;
        userAddresses.push(msg.sender);
    }

    function updateUserLevel(address _userAddress, uint256 _userLevel) public {
        User storage userDetail = userList[_userAddress];
        userDetail.level = _userLevel;
    }

    function getUserDetail(address _userAddress)
        public
        view
        returns (uint256, uint256)
    {
        return (userList[_userAddress].level, userList[_userAddress].status);
    }

    function createUserRecord(
        address _userAddress,
        uint256 _level,
        uint256 _status
    ) public returns (uint256 newUserIndex) {
        User storage newRecord = userList[_userAddress];
        newRecord.level = _level;
        newRecord.status = _status;

        userAddresses.push(_userAddress);
        newUserIndex = userAddresses.length - 1;
    }

    function createUserRecordTwo(
        address _userAddress,
        uint256 _level,
        uint256 _status
    ) public returns (uint256 newUserIndex) {
        userList[_userAddress] = User({level: _level, status: _status});
        userAddresses.push(_userAddress);
        newUserIndex = userAddresses.length - 1;
    }

    function getUsers() public view returns (address[] memory) {
        return userAddresses;
    }

    function numberOfUsers() public view returns (uint256) {
        return userAddresses.length;
    }
}